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.NET Interview Questions and Answers

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<h2>Create an MVC application</h2>
Go to visual studio.net
<img class="alignnone size-full wp-image-5846" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/310.png" alt="3" width="13" height="48" />
Click on file
<img class="alignnone size-full wp-image-5846" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/310.png" alt="3" width="13" height="48" />
Click on new
<img class="alignnone size-full wp-image-5846" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/310.png" alt="3" width="13" height="48" />
Click on project
<img class="alignnone size-full wp-image-5846" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/310.png" alt="3" width="13" height="48" />
Select visual c# from the installed template.
<img class="alignnone size-full wp-image-5846" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/310.png" alt="3" width="13" height="48" />
Select ASP.net WVC web application template
<img class="alignnone size-full wp-image-5846" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/310.png" alt="3" width="13" height="48" />
Type the application name (example)
<img class="alignnone size-full wp-image-5846" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/310.png" alt="3" width="13" height="48" /> Select the location to save
<img class="alignnone size-full wp-image-5846" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/310.png" alt="3" width="13" height="48" />
Click on ok.
&nbsp; <img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" />This will create an ASP.net MVC2 web application.
<img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" />When we create ASP.net MVC2 web application it will create 5 folders.
<ol>
<li>Content</li>
<li>Controllers</li>
<li>Models</li>
<li>Views</li>
<li>Scripts</li>
</ol>
 Content folder:
This folder will contain all the required CSS files that is to be attached to the view pages.&nbsp;
<blockquote>
<p style="box-sizing: border-box; margin: 10px 0px; font-weight: 400; font-family: quicksand, sans-serif; font-size: 15px; text-align: justify; color: #333333; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="box-sizing: border-box; color: #e03e2d; text-decoration: none; background-color: transparent; transition: all 0.2s linear 0s;" href="net-training" target="_blank" rel="noopener">.NET Training</a>"
</blockquote>
Views folder:
By default, the views folder will contain 3 folders as follows
<ol>
<li>Account</li>
<li>Home</li>
<li>Shared</li>
</ol>
<img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" />Then every folder contains some view page.
<img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" />The shared&nbsp;folder contains commonly used files like master pages, user control, etc.
<img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" />Here we find only .aspx pages we do not find .cs files
<img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" /> .cs files will be available in the controller&rsquo;s folders and models folder.
Controllers folder:
This folder will contain one .cs file for every folder available in views.
<img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" />In view, we have a home folder and account folder so we find two supported files in controller folders.
<ol>
<li>Account controller folder.cs</li>
<li>Home controller.cs</li>
</ol>
<img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" />Every controller file will contain some method called action method with the name of the webpage.
<img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" />I.e. home controller.cs we find 4 action methods
Change password ()
Change password success ()
Logon ()
Register ()
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Models folder:
<img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" />This folder will contain one super file one each folder available in views
<img class="alignnone size-full wp-image-5845" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/210.png" alt="2" width="39" height="13" />In case the view contains the data from the database &nbsp;
 Scripts folder: 
It will contain all javascript and journey files that contain the code related to validation.
&nbsp;
<div class="tags">&nbsp;</div>

How to Create MVC application in .NET | Tekslate

Create MVC application in .NET

create-mvc-application-net-give-example

&nbsp;
<h2>C# .Net Data Types</h2>
Data type <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Type of data Data type specifies the size of the data and type of data. C#.net data type is divided into two types
Value Type Int&nbsp; i = 0 I <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />10 &nbsp;(7000) C language &nbsp;C#
Reference Type&nbsp; Int * p = i p<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> 7000&nbsp; (9000) &nbsp; Stack&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Heap 90%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10% 10%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 90% &nbsp;
<h3>Value Type</h3>
The value type will be created at compile-time and these will be started in STACK memory. Value types hold the data directly No default value for value type GC (Garbage collector) cannot access stack memory. that is GC can not clear stack run time Examples
Pre-defined data types
Structures
Enum&rsquo;s (Enumerator)
<blockquote>
<p style="box-sizing: border-box; margin: 10px 0px; font-weight: 400; font-family: quicksand, sans-serif; font-size: 15px; text-align: justify; color: #333333; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="box-sizing: border-box; color: #e03e2d; text-decoration: none; background-color: transparent; transition: all 0.2s linear 0s;" href="net-training" target="_blank" rel="noopener">.NET Training</a>"
</blockquote>
<h3>Reference Type</h3>
Reference Type will be created at run time and these will be stored in HEAP memory. Reference Type holds the reference but not the data. The reference Type holds the default value. GC can access HEAP memory. Examples:-
Classes
Object
Arrays
Interface
Delegates
Var (newly introduced)
Etc&hellip;&hellip;&hellip;&hellip;&hellip;
<h3>Working with Predefined Data types&nbsp;</h3>
These are divided into 4 groups
Group 1:- Integral Data type
.byte<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> 1 byte&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />255
.S byte <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />1 byte&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -128 to +127
.Short <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />2 bytes&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -32768&nbsp; to +32768
.U short <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp; &nbsp;2 bytes&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 &ndash; 65535
Int <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;4 bytes&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;~ +- 214 cores
U int<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> 4bytes&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 -~ 429 cores
Long <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />8 bytes&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; + 2^63
U Long &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> 8 bytes&nbsp;&nbsp;&nbsp;&nbsp; 0 &ndash; 2 ^ 64 -1
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Group 2:- Floating Related Data Types
*float 4 B
*double 8 B
*decimal 16 B
Group 3:- character Related Data types
&nbsp;.char 2 B:&nbsp; char holds UNICODE&nbsp; (universal coding) characters that are required for globalization.
.String 16 B : 4 GB
Group 4 :- other Data type
.bool 1 B <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;true/ false
.Data time <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;12 B
1/1/0001&nbsp; to 31/12/9999 &nbsp;
Syntax to declare a variable 
&lt;Data type&gt;&nbsp; var&nbsp; name = value; &nbsp;
Note:- In C# .net always variable name need to be started either with alphabet, underscore, @ symbol
Obs :-
<pre class="language-javascript"><code>Int a =90;

Int &ndash; a = 90;

Int @a = 90;

Int *a = 90;

Int 2a = 90;

Int if = 90;

</code></pre>
Example on Data Types
Open console Application project.
Write the following code in the main method.
<pre class="language-javascript"><code>Int I = 90;

Console. Write Line (i);

Float x = 4.0 f Console. Write Line (x);

Byte b1 = 10, b2 = 20;

Int c = b1 + b2;

Console. Write Line (c);

Console. Write Line ();

Execute the project :(f5)</code></pre>
Observations
value types must be initialized before using
float X = 4.0 gives an error
Reason
By default 4.0&nbsp; will be treated as double;
Solution: - &nbsp;
float x = 4. 0 F&nbsp; (or) float&nbsp; X = 4. 0f;
A number, which is post fixed with f @ F is called as float.
A number, which is post fixed with d @ D is called as double.
A number, which is postfixed with m@ M is called decimal.
Byte c = b1 + b2, gives an error + operator returns the result in the format of int.

C# .Net Data Types | .Net Study Guide | Tekslate

C#.net Data Types

c-net-data-type

&nbsp;
<h2>Loops</h2>
<h3>Syntax of for loop</h3>
 For (initialization ;&nbsp; condition , ++&nbsp; (or) --) 
{ 
Statements; 
} 
<h3>While Syntax </h3>
While (condition)
 { 
Statements ;
 }
<h3>Do While Syntax</h3>
Do
 {
 Statements ;
 } 
While (condition)
<blockquote>
These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>"
</blockquote>
&nbsp;
Example on for loop
 Place a button on the form then Add 10 text boxes in to the form when clicked on a button
 &nbsp; <img class="alignnone wp-image-7581" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_218-460x215.png" alt="Screenshot_21" width="566" height="264" />
 &nbsp; Open windows forms application project Place a button Code for button 1 
<pre class="language-javascript"><code>click

{

Int X = 30;

For (int I =1; i&lt;10; I++);

{

Text box t = new text box ();

location = new point (100,x);
this. Controls .Add (t);

x = x + 30;

}

Press f5

</code></pre>
Execute the project
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 &nbsp; <img class="alignnone wp-image-7582" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_224.png" alt="Screenshot_22" width="363" height="293" />
 Observations 
In C # .net all the controls are predefined classes. &nbsp;

Loops in C# .Net | .Net Tutorials | Tekslate

Loops in C# .Net

loops-c-net-with-examples

&nbsp;
<h2>Arrays</h2>
Arrays are of type &ldquo;reference&rdquo; That is even if an Array is not initialized still it holds some default values. 
int a, b, c ; C = a + b; STACK
 <img class="alignnone size-full wp-image-7585" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_234.png" alt="Screenshot_23" width="297" height="299" /> 
Array&nbsp; X(5)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; x=5000 HEAP 
&nbsp; <img class="alignnone wp-image-7586" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_243.png" alt="Screenshot_24" width="298" height="316" /> &nbsp; 
The array is a collection of homogeneous data type Arrays shares the same name with different index values Always index starts from &lsquo;0&rsquo; Arrays will be stored in continuous memory Arrays are faster in accessing All the arrays are instance of the system. Array class
These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="box-sizing: border-box; color: #e03e2d; text-decoration-line: none; transition: all 0.2s linear 0s;" href="net-training" target="_blank" rel="noopener">.NET Training</a>"
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&darr;
&nbsp;
<img class="alignnone wp-image-7588" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_264-460x383.png" alt="Screenshot_26" width="422" height="350" />
&nbsp;
C# supports three types of Arrays One-dimensional arrays Multidimensional arrays Jagged Arrays &nbsp; &nbsp; &nbsp;&nbsp;
&nbsp;<img class="alignnone wp-image-7587" style="font-size: 16px;" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_254-460x493.png" alt="Screenshot_25" width="427" height="459" />
<h2>Working with a one-dimensional array</h2>
Syntax Data type []&nbsp; arr_name&nbsp; = new data type [size]; 
&nbsp;
Example <img class="alignnone size-full wp-image-7589" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_274.png" alt="Screenshot_27" width="338" height="425" /> 
&nbsp; While initializing an array, size is not recommended 
Example 
A program to print array default rules:- 
Open window forms application project Place a button Code for button 1 
<pre class="language-javascript"><code>click

{

Int [] x = new int [2];

For (int I =0 ; i&lt; arg.length ; I ++);

Message Box. Show ( x [i]+ &ldquo;&rdquo;);

}

</code></pre>
Output
&nbsp; <img class="alignnone size-full wp-image-7590" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_295.png" alt="Screenshot_29" width="232" height="167" /> 
Observations
The integral Array default value is Zero. Floating Array default value is Zero. 
char Array default value is nothing. Bool Array default value is false. 
Date time Array default value is 1/1/0001 12:00:00 AM.
<h3>Example</h3>
A program to create or get the spelling of a given number&nbsp;&nbsp;&nbsp;&nbsp; (1&hellip;&hellip;&hellip;&hellip;&hellip;&hellip;&hellip;..999) 123&hellip;&hellip;&hellip;&hellip;..one hundred twenty-three Open windows forms application project Place two text boxes and a button <img class="alignnone wp-image-7591" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_304-460x235.png" alt="Screenshot_30" width="439" height="224" /> &nbsp;
<pre class="language-javascript"><code>Code for button1

click

{

Int n = int. parse (text box 1.text);

Int I = 0;

String res = &ldquo;&rdquo;;

String [] ones = new string [] 

{ &ldquo;one&rdquo;, &ldquo;two&rdquo;, &ldquo;three&rdquo;, &ldquo;four&rdquo; &ldquo;five&rdquo;, &ldquo;six&rdquo; &hellip;&hellip;&hellip;&hellip;&hellip;&hellip;,&rdquo; nineteen&rdquo;};

String [] Tens = new string []

{&ldquo;ten&rdquo;, &ldquo;twenty&rdquo;, &ldquo;ninety&rdquo;};

N = 426 N = 426/ 100 -&agrave; 10/3 = 3

 If (n &gt; 99 &amp;&amp; n &lt; 1000)

{

I = n / 100; Res = ones [I - 1] + &ldquo;hundred&rdquo;; N = n % 100;

}

If (n &gt; 19 &amp;&amp; n &lt; 1000)

{

I = n / 100; Res = ones [I - 1] + &ldquo;hundred&rdquo;;

N = n % 100;

}

If (n &gt; 0&amp;&amp; n &lt; 20)

Res =res + ones [I - 1] ;

Text Box 2.text = res;

F5

}

</code></pre>
<img class="alignnone size-full wp-image-7593" style="font-size: 12pt;" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_326.png" alt="Screenshot_32" width="305" height="270" />
<h2>Working with Multi Dimensional Arrays</h2>
Arranging a set of elements in rows and columns is called&nbsp; &ldquo;Multi-Dimensional Array&rdquo;. 
In a Multi-Dimensional Array, every row must contain the same number of elements. Multi-Dimensional Array size will be represented with no. of rows X&nbsp; no. of columns If the array name is &lsquo;X&rsquo; then x. length return a total number of elements. 
 <img class="alignnone size-full wp-image-7594" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_334.png" alt="Screenshot_33" width="402" height="346" />
get length (0) returns no. of rows get length (1) returns no. of columns syntax to declare multi &ndash; d array I0 : int [] x = new int [s]; S <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> 20 : int [,] x = new int [s,s]; 30 : int [,,] x = new int [s,s,s];
&nbsp;
 Note VB supports up to 32 dimensions where as no limit in C #.NET Syntax to initialize 2 D Array &nbsp; Int [,] x = new int [,] { {5,6,7,8} {9,8,7,6} {5,5,5,5} } 
&nbsp; <img class="alignnone wp-image-7595" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_344-460x172.png" alt="Screenshot_34" width="410" height="153" /> &nbsp;
&nbsp;
Example with multi dimension Array 
Open windows forms application project Place a button Code for button 1 
<pre class="language-javascript"><code>click

 {

String s = &ldquo;&rdquo;;

Int [,] x = new int [,];

{ {5, 6, 7, 8}, {9, 8, 7, 6}, {5, 5, 5, 5} };

 r=0 c = 0 Rr=1 c =1 c =2 c =3 message box. Show (&ldquo;Total :&rdquo; + x. length) ;

message box .show (&ldquo;Rows : + x. get length (0)&rdquo;) + &ldquo; cols :&rdquo; + x. get length (1) );

For (int r = 0; r &lt; x. get length (0);r ++)

{

For (int c = 0; c&lt; x. get length (0);c ++)

{

S = S + X [r,c] + &ldquo;&rdquo; ;

}

S= s + &ldquo;/n&rdquo;

}

Message Box. Show (s);

</code></pre>
<h3>Jagged Arrays</h3>
ABC(Company) Members are working Employees &nbsp; <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />3*6<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />values 
<img class="alignnone wp-image-7596" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_354-460x379.png" alt="Screenshot_35" width="438" height="361" /> &nbsp; 
A jagged array is a collection of rows where every row may contain a different number of elements. Jagged arrays save memory. Jagged arrays are faster in accessing. Jagged arrays are also called as &ldquo;Dynamic array&rdquo; (run time array) Jagged array is also called an array of arrays.
 Syntax Int []&nbsp; [] x = new int [3] []; X [0] = new int [] {4,2,3,5,6,7} X [1] = new int [] {3,8,4,2,4}
 Example Open windows forms application project Place a button Code for button 1 
<pre class="language-javascript"><code>click

 {

Int [] [] x = new int [3][];

X [0] = new int [] {5,3,4,6,7,7};

X [1] = new int [10];

X [2] = new int []{2,3};

String S = &ldquo;&rdquo;;

For (int r = 0;r &lt; x.get length (0);r ++)

{

For (int c = 0;r &lt; x.get length (0);c++)

{

S= s + x[ r][c] +&rdquo;&rdquo;;

}

S =s + &ldquo;/n&rdquo;

}

Message Box. Show (s); </code></pre>

Arrays in C# .Net | .Net Study Guide | Tekslate

Arrays in C# .Net

arrays-c-net-with-examples

&nbsp;
<h2>Working with Instance and Local variables</h2>
The variable created within the class is called &ldquo;Instance variables&rdquo;. The variables created within a function are called &ldquo;local variables&rdquo;. When instance variables names and local variable names are the same then by default priority will be given to the local variables In the above case in order to access instance variables this keyword is required. This keyword always points to the currents class. This will be created at run time. Example of &ldquo;this&rdquo; keyword with instance and local variables.
&nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Place a button
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Code in GD &nbsp; 
Code&nbsp;&nbsp; 
<pre class="language-javascript"><code>Class EMP

{

Private int Sal = 5000;

Public void incr (int Sal)

{

This Sal = this. Sal + Sal ;

}

Public void print ()

{

Message Box. Show (&ldquo;Sal = &rdquo; + Sal)

}

</code></pre>
Code for Button 1_ click 
<pre class="language-javascript"><code>EMP e1 = new EMP ();

E1.incr (3500); E1.print (); 

</code></pre>
<blockquote>
Interested in mastering .NET? Learn more about "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a> "in this blog post.
</blockquote>
<h3>Function Arguments</h3>
Syntax 
&lt;Access Specifier&gt;return type func _name (args) C#
.net allows to pass the arguments in three ways:- 
Call by value
 Call by reference 
Call by out&nbsp;&nbsp;
<h3>Call by value and call by reference</h3>
When formal arguments are modified and if modification is reflected on actual arguments, then the concept is called as &ldquo;call by reference&rdquo; When formal arguments are modified and if modification are not reflected on actual arguments, then the concept is called as&nbsp;&nbsp; &ldquo;call by value&rdquo; By default variables will be passed by value. Reference is a keyword which is required to pass a variable The variables which are passing by ref must be initialized Reference keyword must be used along with actual and formal arguments. 
<a style="background-color: #e94350; color: #ffffff; padding: 10px 20px;" href="net-tutorials" target="_blank" rel="noopener">Check Out .Net Tutorial</a>
Example on call by value and call by reference
 Open windows form application project
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Place a button
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Code in GD 
<pre class="language-javascript"><code>Class Test
Public void SWAP (int a, ref int b)
{
Int t = a;
A= b;
B =t;
}
}
Code for Button 1 _click
Private void button1_click ()
{
Int x = 10;
y = 20;
Test t = new Test ();
t.SWAP (x, ref y);
Message Box. Show (x + &ldquo;&rdquo; + y);
} 

</code></pre>
<h2>Call by out</h2>
It is 99% similar to cal by ref. Out is a keyword Out allows to pass a variable without initialization also. Event if out variable is initialized, the value will not be passed. out = ref _ initialization &nbsp; 
Example on call by out
 Place a button Code in GD &nbsp;
<pre class="language-markup"><code>Class test
{

Public void print (out int x)

{ X =10;

X= x +x;

}

}
Code for button 1_ click ()
Private void button1_ click ()
{

Int a ;

Test t = new Test ();

t.Print (out a);

Message Box. Show (a);

}</code></pre>

Instance and Local variable in C# .Net

instance-and-local-variable-in-c-sharp-net-with-examples

&nbsp;
<h2>Function Overloading</h2>
Function overloading is a concept of writing more than one function with the same name and with different types of arguments. 
&nbsp;Observations
<table style="width: 696px; height: 322px;" border="1" cellspacing="1" cellpadding="1">
<tbody>
<tr>
<td>Proto type</td>
<td>possible to overload</td>
</tr>
<tr>
<td>Public void Print ()</td>
<td>1 &amp; 2&nbsp; Not possible</td>
</tr>
<tr>
<td>Private Void Print ()</td>
<td>1 &amp; 3 Not possible</td>
</tr>
<tr>
<td>Public int Print ()&nbsp;</td>
<td>1&amp; 4 Yes</td>
</tr>
<tr>
<td>Public void Print (Int x)</td>
<td>&nbsp;4 &amp; 5 NO</td>
</tr>
<tr>
<td>Public void Print (int y)&nbsp;</td>
<td>4 &amp; 6&nbsp;&nbsp; Yes&nbsp;</td>
</tr>
<tr>
<td>Public void Print (ref int x)</td>
<td>4 &amp; 7&nbsp; Yes</td>
</tr>
<tr>
<td>Public Void Print&nbsp; (out int x)&nbsp;</td>
<td>6 &amp; 7 No</td>
</tr>
<tr>
<td>Public void Print&nbsp; ()&nbsp;</td>
<td>1 &amp;8&nbsp; Yes [Not overloading concept]</td>
</tr>
</tbody>
</table>
<blockquote>
&nbsp;These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>".
</blockquote>
Example on function overloading 
Open Window forms Application Project Place a Button Code in GD 
<pre class="language-javascript"><code> Class Test

{

Public void print ( float x)

{

Message. Box. Show (&ldquo;From float :&rdquo; + X);

}

Public void Print (double X)

{

Message. Box. Show (&ldquo;From double:&rdquo; + X);

}

Public void Print (decimal X)

{

Message. Box. Show (&ldquo;From decimal:&rdquo; + X);

}

}

//test Code for button1_click Test t = new Test (); 

Print (4.0) ;//
//t. Print (4); error

Print (4f);//float
Print (4m);//decimal
Print (4d);//double
 </code></pre>

Function Overloading in C# .Net | .Net Study Guide | Tekslate

Function Overloading in C# .Net

function-overloading-c-sharp-net-with-exampler

&nbsp;
<h2>Constructors</h2>
A constructor is a special type of method, will be executed automatically while an object is about to create. De Constructors is a special type of method, will be executed automatically while an object is about to destroy. Constructors name must be the same as a class name without &ldquo;RETURN TYPE&rdquo; 
Syntax 
Public CL_Name () { &nbsp; } 
De Constructor name must be the same as a class name without a field&nbsp; ( ~) Prefix and without return type and access specifier. 
Syntax &nbsp;
 CL_ Name () { } Constructors are over loadable. 
De -Constructors are not overloadable. Generally, constructors will be used to initialize the fields, to open connections or Files, etc.. Generally, deconstructors will be used to De Allocate the memory and to close the connections and files, etc.&nbsp; 
&nbsp;These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="box-sizing: border-box; color: #e03e2d; text-decoration: none; background-color: transparent; transition: all 0.2s linear 0s;" href="net-training" target="_blank" rel="noopener">.NET Training</a>".
<h3>Example on Constructors</h3>
Open windows form Application Project &agrave; Place a button &agrave; Code in GD
&nbsp;
<pre class="language-javascript"><code>Class Test

{

Public Test ()

//Constructor

{

Message Box. Show (&ldquo;From Constructor &rdquo;);

}

~ Test ()

// De- Constructor

{

Message Box. Show (&ldquo;From De -Constructor&rdquo;)

}

 }

/Test 

Code for Button 1_click

{

Test t1 = new Test ();

Test t2 = new Test ();

Test t3 = new Test ();

}

 Execute the project

</code></pre>
&nbsp;&nbsp;Observations
When the above project is executed, then 3 times the constructor and 3 times de-constructor will be executed. After a project is terminated (closed), then within 2 sec Garbage collector will be loaded into the memory. Garbage collector Reclaims (clears), the memory allocated for the current project. The garbage collector can be invoked programmatically also with the help of GC. Collect () &nbsp; &nbsp;

Constructors in C# .Net

constructors-c-sharp-net

&nbsp;
<h2>Working with Static Keyword</h2>
Class Circle { Private int x, y, z; Private Static double pi = 3.14;. } Static is a keyword. Static keyword can be used with fields, constructors, methods, and classes. Static Fields will be created only once while the class is loaded into the memory. Instance Variables will be created separately with every object. Static variables create common memory which is sharable by all the objects. If the Static variable is public, then it can be accessed directly with the class name But NOT WITH OBJECTS.
 Observations 
<pre class="language-javascript"><code>Class Test

{

Public int I;

Public Static int S;

}

Test I = 10;

wrong Test s =20;

correct Test t = new Test ()

I = 10; correct

t.s = 20;

wrong 

</code></pre>
A static constructor can access only static variables.
Static constructor will be executed only once, While class is loading into the memory.
<blockquote>
Interested in mastering .NET? Learn more about "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.&nbsp;
</blockquote>
 Example of static variables and static constructor
 Open windows form Application Project <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Place a button 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Code in GD
<pre class="language-javascript"><code>Class Test

{

Private int I;

Private Static int s;

Static Test ()

// Static constructor

{

S= 0;

}

Public Test ()

//Normal Constructor

{

I = I +1;

S = s+1;

Message Box&gt;show (I + &ldquo;&rdquo; +s);

}

}

//Test Code for button 1_ click

{

Test t1 = new Test ();

Test t2 = new Test ();

Test t3 = new Test ();

}

</code></pre>
 S=0 
T1&nbsp; I =0
 I=0 +1 
I =1 
S=1 &nbsp;
 I&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;s
 1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1 &nbsp; 
&nbsp; T2&nbsp; &nbsp;I =0 
I = 0+1
 I =1 
S =s +1 
S =I +1 
S= 2 
&nbsp; I&nbsp;&nbsp;&nbsp;&nbsp; s
 I&nbsp;&nbsp;&nbsp; &nbsp;2&nbsp; &nbsp; &nbsp; &nbsp; t2&nbsp; 
I&nbsp; &nbsp;s 
I&nbsp;&nbsp; &nbsp;&nbsp;3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; t3&nbsp;&nbsp;
<h3>Observations</h3>
&nbsp; Class JA&nbsp; (Joint account) {
 Private string Name () &nbsp; 
<img class="alignnone size-full wp-image-7620" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_453.png" alt="Screenshot_45" width="340" height="280" /> &nbsp;
<h2>Static Method and Static Classes</h2>
&nbsp; Class Test 
{ 
Public Static void P1 ()
{} 
Public Static void P2 ()
{}
 } 
&nbsp; A static method can access only static data. The static method needs to be called with the class name. &nbsp; &nbsp; 
<img class="alignnone size-full wp-image-7621" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_463.png" alt="Screenshot_46" width="326" height="116" /> &nbsp; 
When a class contains all static methods only. Then recommended to declare that class as static. Static class are not intangible (creation of an object is not allowed)&nbsp; &nbsp;
 Example of static method and static classes 
Open windows Application Project &agrave;Place a text box and a button
<h3>Note</h3>
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />In this program, a predefined class called a process is required.
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Process class is a &nbsp;part of the System. Diagnostics namespace. 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />In order to use process classes, this namespace needs to be imported with the help of the &ldquo;using&rdquo; &nbsp;keyword. 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Code in GD Static classes software { Public static void open (string s) { Process. start (s); }//open }//software class
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />code for Button 1-cilck { Software. open (text Box1.text); } &nbsp;

Static Keyword in C# .Net | .Net Study Guide | Tekslate

Static Keyword in C# .Net

static-keyword-c-sharp-net

&nbsp;
<h2>Operator Overloading</h2>
&nbsp; int a = 10; b = 20;,c;
C= a + b-<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />30&nbsp; (Addition)
String S1 = &lsquo;ABC&rsquo;, S2 = &lsquo;XYZ&rsquo;,S3;
S3 = S1+S2<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Abc xyz&nbsp; (concatenation)
Assume that test is a class and t1,t2,t3 are objects then
T3 = t1+t2
gives an error &lsquo;+&rsquo; operator is developed to use with numbers and string only BUT NOT WITH OBJECTS. &nbsp;
Operator overloading is a concept of extending the functionality of an Existing operator.
All the operators are overloadable except those contains a.
<blockquote>
These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>"
</blockquote>
That is the following operators are not overloadable.
&nbsp; <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp; member Access operator
:: Ternary or conditional operator
:: property access operator
: &nbsp;&nbsp;Inheritance operator
While overloading relational operators, these must be overloaded in &lsquo;PAIR&rsquo;. &nbsp;
To overload &gt;, &lt; must be overloaded
To overload &gt;=, &lt;= must be overloaded.
To overload ==,!= must be overloaded. &nbsp;
An overloaded operator must be declared as static.
Operator is a keyword.
Syntax to overloaded an operator &nbsp;
Public static return type&nbsp; operator + (args)
{
Logic;
} &nbsp;
Example:-&nbsp; on overloading + operator for adding the objects &nbsp;
Class EMP {
Private int Sal;
.
.
.
.
}
E1
&nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Sal (5000) E2
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Sal (8000) E3 &nbsp;
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Sal (2700) &nbsp;
E1+E2+E3 = EMP(Data type) &nbsp;
Open windows forms Application project &agrave; Place a button
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Code in GD &nbsp;
<pre class="language-javascript"><code>Class EMP

{

Private int Sal;

Public EMP (int x )

// constructor

{

Sal = X;

}

Public EMP ()

// Default constructor

{}

Public void Print ()

{

Message Box. Show (Sal);

}

 //overloading + public static EMP operator + (EMP X , EMP y)

{

EMP t = new EMP ();

Sal = X. Sal + Y. Sal;

return t;

}

operator overloading

 }// EMP class 

Code for Button 1_click

{

EMP e1 = new EMP (5000);

EMP e2 = new EMP (8000);

EMP e3 = new EMP (5000);

EMP total = new EMP ();

Total = e1 +e2+e3 ;

Total .Print ();

} </code></pre>

Operator Overloading in C# .Net | .Net Guide | Tekslate

Operator Overloading in C# .Net

working-operator-overloading-c-sharp-net

&nbsp;
<h2>Steps for Debugging a project</h2>
&nbsp; Place a breakpoint (Right-click on any line on the source code, select breakpoint, insert breakpoint). 
Press F5 for execution. 
Click on button 1. 
The execution will be stopped at a breakpoint. 
To continue line by line execution press F11. 
To observe the value of a variable, right-click on a variable name, Add watch.&nbsp;
&nbsp;
<p style="box-sizing: border-box; margin: 10px 0px; font-weight: 400; font-family: quicksand, sans-serif; font-size: 15px; text-align: justify; color: #333333; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">&nbsp;
<p style="box-sizing: border-box; margin: 10px 0px; font-weight: 400; font-family: quicksand, sans-serif; font-size: 15px; text-align: justify; color: #333333; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">&nbsp;
&nbsp;
<blockquote style="box-sizing: border-box; margin: 0px 0px 1rem; border-left: none; padding: 15px; line-height: 36px; color: #333333; font-family: quicksand, sans-serif; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">
These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="box-sizing: border-box; color: #e03e2d; text-decoration: none; background-color: transparent; transition: all 0.2s linear 0s;" href="net-training" target="_blank" rel="noopener">.NET Training</a>"
&nbsp;
&nbsp;
</blockquote>

Debugging a Project in C# .Net | .Net Guide | Tekslate

Debugging a Project in C# .Net

steps-debugging-project-c-sharp-net

&nbsp;
<h2>Inheritance</h2>
Inheritance is a concept of deriving the features from one class to another class. 
An inheritance leads to code reusability. 
Inheritance also saves memory. 
&nbsp;
Observation 
<img class="alignnone size-full wp-image-7626" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_473.png" alt="Screenshot_47" width="381" height="179" />
<blockquote>
These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online"<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener"> .NET Training</a>"
</blockquote>
<pre class="language-javascript"><code> Class EMP

{

P in temp no (or) Private int ENO;

Private String EName;

Private int Sal;

}

 Class worker (wrk)

{

28 bytes

}

Class manager : wrk

{

12 bytes

} 

</code></pre>
<h3>Types of Inheritance</h3>
<h4>Single Inheritance</h4>
Class A
 { }
 Class B: A 
{ } &nbsp; 
<img class="alignnone size-full wp-image-7629" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_484.png" alt="Screenshot_48" width="268" height="195" />
Class A 
{ 
P1 ()
 } 
Class B:A
 { 
P2 ()
 } &nbsp; 
<h4>Multiple Inheritance</h4>
<img class="alignnone size-full wp-image-7630" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_493.png" alt="Screenshot_49" width="103" height="301" /> &nbsp; 
Class A Base class
 {
 } 
Class B: A derived class 
{
 }
 Class C:B derived class
 {
 } 
<h4>&nbsp; Hierarchical Inheritance &nbsp;</h4>
 <img class="alignnone size-full wp-image-7631" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_502.png" alt="Screenshot_50" width="359" height="155" /> &nbsp; &nbsp;
<h4> Multiple Inheritance </h4>
&nbsp; <img class="alignnone wp-image-7632" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_516-460x207.png" alt="Screenshot_51" width="471" height="212" /> 
&nbsp; &nbsp; Class c : A, B
 C obj = new c ()
 Obj .P1 () 
Not possible&nbsp; (or)&nbsp; supported in .net. &nbsp;
<h2>Types of Inheritance</h2>
Multiple inheritances is not supported directly in C #.net. 
But a similar structure is supported with the help of Inheritance. 
<h4>&nbsp; Hybrid Inheritance &nbsp;</h4>
<img class="alignnone size-full wp-image-7633" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_524.png" alt="Screenshot_52" width="369" height="242" /> &nbsp; 
It is not supported
 It contains multiple Inheritance &nbsp; 
<h4>Logical Diagram in Inheritance concept</h4>
 B obj = new B() &nbsp;
 <img class="alignnone wp-image-7634" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_533-460x199.png" alt="Screenshot_53" width="456" height="196" /> 
<img class="alignnone wp-image-7635" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_543.png" alt="Screenshot_54" width="308" height="674" /> &nbsp; &nbsp; 
Private data is accessible only from the class where these are declared. 
Protected data is accessible from ALL SUBCLASSES (derived class )also. 
Class B : Private A -&agrave; C ++ Concept 
Public data is accessible in the derived class as well as from objects &nbsp;
 Ex 1:- 
A company gives Bonus, when they are reaching the target, then calculate the total salary. 
ENO
 SAL
 BONUS 
%S (Total Salary) &nbsp; 
Open windows forms application project Place a button Code in GD &nbsp; &nbsp;
<pre class="language-javascript"><code>Class EMP

{

Private int ENO = 101;

Protected int Sal = 5000;

Public void print ()

{

Message. Box. Show (E no + &ldquo;&rdquo; + Sal);

}

//print

}

// class (EMP) 

Class bonus : EMP

{

Private int b, ts;

Public void calculate (int n)

{

B = n;

Print ();

Ts = Sal +b;

Message Box. Show (&ldquo;Total&rdquo; + ts);

}

}

</code></pre>
//Bonus Code for
<pre class="language-javascript"><code>Button1_click

{

Dialog Result dr;

 Dr = Message Box . show (&ldquo;R u getting bonus&rdquo;, &ldquo;Peers&rdquo;, Message Box Buttons. Yes No, Message Box Icon .Question );

If (dr = = Dialog Result .yes)

{

Bonus obj = new bonus ();

Obj. Calculate (3000);

}

Else {

EMP X = new EMP ();

print ();

}

 (or) new EMP ().Print (); // name less object

} 

</code></pre>
<h4>Working with overriding (Runtime Polymorphism)</h4>
<img class="alignnone size-full wp-image-7637" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_562.png" alt="Screenshot_56" width="79" height="198" /> &nbsp; 
<pre class="language-javascript"><code>Public void Print ()

{

MB.S (&ldquo;A&rdquo;)

}

Public void show ()

{

MB.S (&ldquo;B&rdquo;);

Print ();

}

B obj = new B ();

Obj. Show () Obj. Print ()

</code></pre>
 Overriding is a concept of having two methods with the same name and the same arguments in Base and derived classes.
 In overriding by default the priority will be given to local class methods. 
In overriding, in order to access parent class method s, 
the &ldquo;base&rdquo; keyword is required. &rdquo;base&rdquo; keyword can be used with methods, fields, and constructors also. &nbsp;
 <img class="alignnone size-full wp-image-7638" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_572.png" alt="Screenshot_57" width="275" height="224" /> &nbsp;
<pre class="language-javascript"><code>{

MBS (&ldquo;A&rdquo;);

}

{

MBS (&ldquo;B&rdquo;);

}

base. show ();

{

MBS (&ldquo;C&rdquo;);

}

base. Show ();

New c () .show ();

</code></pre>
Example on overriding Fields
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />open window forms application project 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />place a button 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />code in GD 
<pre class="language-javascript"><code>Class A

{

Public int x = 10;

}

Class B :A

{

Private int x = 100;

Public void print (int x)

{

Message Box. Show (This. x + &ldquo;&rdquo;) ;

//100

Message Box. Show (base. x + &ldquo;&rdquo;) ;

//10

Message Box. Show (This. x + &ldquo;&rdquo;) ;

//1000

}

}

Code for Button 1_click

{

B obj = new B ();

Obj. print (1000);

Message Box .Show (obj . x + &ldquo;&rdquo;);

//10

}

</code></pre>
<h4>Working with Sealed classes</h4>
Sealed classes are not inheritable Sealed is a keyword When a class is providing full functionality as per the requirements, then recommended to declare that classes as &ldquo;sealed class&rdquo;
<h3>Example of a sealed class&nbsp;</h3>
Open windows forms application project Place a button Code in GD &nbsp; Sealed 
<pre class="language-javascript"><code>class test

{

Public void divide (Sting s)

{

String [] x = s. split (&ldquo;&rdquo;);

For (I =0; I &lt; x. length; I ++)

Message Box. Show (x [i]);

}

// divide

Class abc : test

{

// gives an error

} 

Code for Button1 _ click

Private void Button1_click (----)

{

Test t = new test ();

Divide (&ldquo;this is for test&rdquo;);

}</code></pre>

Inheritance in C# .Net | .Net Study Guide | Tekslate

Inheritance in C# .Net

types-inheritance-c-sharp-net-with-examples

&nbsp;
<h2>Abstract Classes and Interface</h2>
&nbsp; An abstract is a keyword 
When a class is not providing full functionality as per the requirement to declare that classes as &ldquo;Abstract&rdquo;. 
A method without a body is called an &ldquo;Abstract method&rdquo;. Abstract methods is also called Rules. 
When a class contains at least one Abstract method, then the class must be declared as &ldquo;Abstract method&rdquo;. 
that is Abstract class contains methods with Body and methods with our body also, then these are called &ldquo;partial Abstract class&rdquo;. 
All Abstract methods must be overridden in the derived classes. An abstract class provides a set of Rules (Abstract method), which must be followed (override) in derived classes. 
An abstract class is not insatiable (an object cannot be created), but a reference can be created. 
Test t = new test () 
// object 
Test x;
 //reference &nbsp;
 &lsquo;t&rsquo; contains its own memory but &lsquo;x&rsquo; does not contain its own memory. 
Always reference work based on child class memory. 
Shape&nbsp; s = new circle (); &nbsp;
<blockquote>
Interested in mastering .NET? Learn more about "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.
</blockquote>
<h3>Example of Abstract class</h3>
&nbsp; Open windows form application project. Place a button Code in GD &nbsp; 
<pre class="language-javascript"><code>Abstract class shape

{

Private int x = 10;

y = 20;

Public void print ()

{

Message Box . Show (X + &ldquo;&rdquo; y);

}

//print

Public Abstract void find area ();

}

//shape

Class circle : shape

{

Provide int r = 10;

Public override void find area ()

{

Double x = 3.14 * r* r;

Message Box. Show (&ldquo;Area is &rdquo; + X);

}

// find Area

Public void Display ()

{

Message Box. Show (&ldquo;thanks&rdquo;);

}

}

//circle &agrave;code for Button 1_ click

Private void button1 _ click (object sender, event prgs e)

{

Circle c = new click ();

print ();
find Area ();
Display () ;
Shape s = new circle ();

print ();
find area ();
} 

</code></pre>
<h2>Interface</h2>
&nbsp; The interface is similar to Abstract classes. 
The interface contains only abstract methods. 
The interface supports a structure like multiple inheritance Syntax to write an interface &nbsp;
 Interface int name 
{ 
Void read ();&nbsp; &agrave; CLR-&agrave;public abstract &agrave;void Read ()
 Void Print (); 
}
 All interface methods are by default public abstract methods. &nbsp;
<h3>Syntax to use Interface in classes&nbsp;</h3>
&nbsp; <img class="alignnone size-full wp-image-7641" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_582.png" alt="Screenshot_58" width="183" height="442" />
 &nbsp; <img class="alignnone size-full wp-image-7643" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_592.png" alt="Screenshot_59" width="275" height="469" /> 
&nbsp; &nbsp; <img class="alignnone size-full wp-image-7642" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_602.png" alt="Screenshot_60" width="299" height="706" /> &nbsp; 
Partial class Test 
{
 Programmer 1
 }
 &nbsp; Partial class Test 
{
 Programmer 2
 } &nbsp;
<h3>Partial Classes</h3>
&ldquo;Partial&rdquo; is a keyword. 
When a class needs to be implemented in multiple locations with the same class name, then their classes need to be declared as partial classes. &nbsp; 
Example of Interface and Partial classes&nbsp; &nbsp; 
Open windows form Application project Place a button Code in GD &nbsp; 
<pre class="language-javascript"><code>Interface i1

{

Void read ()

}

 Interface i2 :i1

{

Void Print ();

}

Partial class test : i2

{

Public void read ()

// overriding method

{

Message Box. Show (&ldquo;From read&rdquo;);

}

}

//Test Partial class T

est // : i2 not must

{

Public void Print ();

{

Message Box. Show (&ldquo;From print&rdquo;);

}

}

//test *F5 Code for Button 1 _ click

{

Test t = new Test ();

read ();
print ();
i2X = new Test ();

read ();
print ();
 *F5</code></pre>

Abstract Classes and Interface in C# .Net -Tekslate

Abstract Classes and Interface in C# .Net

abstract-classes-interface-c-sharp-net-with-examples

&nbsp;
<h2>&nbsp;Working with windows programming [GUI programming]:-</h2>
<ol>
<li>working with from and controls is called as GUI programming.</li>
<li>Windows programming supports to develop disk top applications, games, animations, Rich interactive, applications, etc,&hellip;&hellip;&hellip;&hellip;</li>
<li>Formworks like a container, where any number of controls can be placed.</li>
<li>The form is also called as WIN FORM (Windows form)</li>
<li>Every Form is a class that must be inherited from a predefined class called FROM.</li>
</ol>
&nbsp; Class Test: Form 
{
 &nbsp; } 
&nbsp; Test <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />form name 
Form<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />predefined class &nbsp;
<h3>Example :</h3>
Developing a user-defined from at the run time. &nbsp; 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />open windows form application project
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />place a button 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />code in GD &nbsp; 
Class Test: Form 
Code for Button 1_ click 
Test t = new Test ();
<ol>
<li>Back color = color. Green;</li>
<li>show ();</li>
</ol>
<blockquote>
&nbsp;Interested in mastering .NET? Learn more about "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.
</blockquote>
<h3>Every Form will be associated with three files </h3>
&nbsp; <img class="alignnone wp-image-7646" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_614-460x74.png" alt="Screenshot_61" width="513" height="82" /> &nbsp;
<h3> Working with FORM properties:-&nbsp; (F4) &nbsp;</h3>
<ol>
<li>Name: - this property changes object names with controls and class name with Forms</li>
<li>Back color: Background color changes</li>
<li>Fore color:-</li>
<li>Font:-</li>
<li>Background Image</li>
<li>Background Image Layout</li>
<li>Opacity (transparent): when this value is decreasing then the transparency ratio will be increasing&nbsp; (2&hellip;&hellip;&hellip;&hellip;&hellip;..100)</li>
<li>Transparency key:- this value must be the same as form back color.</li>
</ol>
Then except form, the border and controls body remaining port will be displayed fully transparent.
<ol start="9">
<li>Form border-style : none</li>
<li>Window state : normal / Minimize / Maximize</li>
</ol>
<h3>Developing a Screen Saver :-</h3>
&nbsp; Generally, Screen saves are.SCR files,&nbsp; which will be under&nbsp; c:/windows/system 32 folder Open windows forms application project with project name Abcd&nbsp; (output file will be abcd. exe) 
&nbsp; Form <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />properties&nbsp; (F4) and set Back color = black Form border style&nbsp; = none. Window state = maximize &nbsp;
<ul>
<li>Place a picture Box control <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;properties<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />image = select an Image</li>
<li>Place a timer control &agrave;properties <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;enabled = true</li>
<li>Code in GD. Int x = 0;</li>
<li>Code for Timer 1_Tick</li>
</ul>
<ul>
<li>
<pre class="language-javascript"><code>{

X = x +5;

If (x &gt; 400) X = 0;

Picture box 1. Location = new point (x, x);

} 

</code></pre>
Code for Form 1 key press event ( Form 1 &agrave;properties &agrave;click on yellow colored Icon (events)&agrave;double click on key press )</li>
</ul>
{
 Application .Exit (); 
}
 Execute the Project (F5) &nbsp;
<h3>OBS:-</h3>
&nbsp; Abcd .exe file will be created under &nbsp; 
D:/c 194/abcd/bin/debug Folder &nbsp; 
Rename Abcd .exe with Abcs.Scr &nbsp;
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />copy Abcd .Scr in to C :/windows / system 32 folder; Then check box desktop properties
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Screen saver &nbsp;
<h3>Form Properties continuation:-</h3>
&nbsp;Context menu Strip :
<img class="alignnone wp-image-7647" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_623-460x183.png" alt="Screenshot_62" width="464" height="184" /> &nbsp; &nbsp;
<ul>
<li>The Associated context menu strip control will be displayed when right-clicked on an object.</li>
</ul>
&nbsp;
<h3>Example on context menu strip:-</h3>
&nbsp; Display an Icon in Systems along with context menu strip. &nbsp;
 <img class="alignnone size-medium wp-image-7648" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_633-460x200.png" alt="Screenshot_63" width="300" height="130" /> &nbsp;
<ul>
<li>Open windows form application project</li>
<li>Place a color &ndash; dialog control</li>
<li>Place a context menu strip control on the form</li>
<li>Design context menu strip with the following options</li>
</ul>
&nbsp; <img class="alignnone wp-image-7651" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_642-460x79.png" alt="Screenshot_64" width="482" height="82" /> &nbsp; &nbsp;
<ul>
<li style="list-style-type: none;">
<ul>
<li>Code for colors menu Item ( double click on colors)</li>
</ul>
{ </li>
<li style="list-style-type: none;">Color Dialog 1. Show Dialog ();</li>
<li style="list-style-type: none;"> this. Back color = color Diaglog1. Color; </li>
<li style="list-style-type: none;">} &nbsp;
<ul>
<li>Code for Exit menu Item</li>
</ul>
{</li>
<li style="list-style-type: none;"> Application .Exit ();</li>
<li style="list-style-type: none;"> } &nbsp;
<ul>
<li>Place a notify Icon control &agrave; properties &agrave; Icon = select icon file</li>
<li>Context menu strip = context menu strip 1 &agrave; name of the control.</li>
</ul>
&nbsp; &nbsp; &nbsp; Execute the project (F5) Then observe the system&rsquo;s tray for a new icon</li>
</ul>
&nbsp; &nbsp;
<h3>Form properties Continuation </h3>
<ol start="2">
<li>Accept button: the Associated button will be executed when pressed &ldquo;Enter key&rdquo;</li>
<li>Cancel Button: the associated button will be executed when pressed &ldquo;Escape key&rdquo;</li>
</ol>
<img class="alignnone size-full wp-image-7653" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_652.png" alt="Screenshot_65" width="367" height="310" /> &nbsp; &nbsp; 
&nbsp; Example:- &nbsp; 
&agrave;Open windows form Application project &agrave;Place five text boxes and two buttons &nbsp;
<pre class="language-javascript"><code>Code for button 1 _ click
{

This. Back color = color .Green ;

}

 &agrave; code for button2_ click (clearing the text boxes)

{

For each (control c in this. controls)

{

If (c. Get type (). Name == &ldquo;Text box&rdquo;)

text = &ldquo;&rdquo;;
} </code></pre>
<ul>
<li>Choose from properties</li>
</ul>
Accept Button = Button 1 
Cancel Button = Button 2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;

Working with windows  programming [GUI programming] in C# .Net

working-windows-programming-gui-programming-c-net

&nbsp;
<h2>Events</h2>
Action on control is called an &ldquo;Event&rdquo;. 
In C #. Net, always events take two arguments
 Always the first argument will be an object but the second argument type may vary from event to event. C #.net events are divided into 4 groups
Mouse Related events
Focus Related events
Drag Related events
Key Related events
Mouse Related Events
 Click
 Double click
 Mouse up
 Mouse Down 
House leave
 House enter
 Mouse More
 Mouse Mover: this event will be fired when the mouse pointer placed on the control for some time.
<blockquote>
Interested in mastering .NET? Learn more about "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.
</blockquote>
A program to use the company logo as the mouse pointer
Open windows form Application Project 
Place a picture Box control &agrave;properties
 Image = Select an Image.
 Size &nbsp;Mode = Stretch Image
 Code for Form1 Mouse More Event
 {
 Picture Box 1. Location = new Point&nbsp; (e. x, e. y);
 Cursor . Hide ();
 }
 Developing Animated Text
Open Windows Forms Application Project
Form &agrave;Properties &agrave;Back color&nbsp; = Black
Place a button
Place a Timer with Enabled = false
&nbsp; Using System. Drawing.Drawing 2D &nbsp; Code in GD
 <img class="alignnone size-full wp-image-7656" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_662.png" alt="Screenshot_66" width="238" height="385" /> 
String S = &ldquo;MICRO SOFT TECHNOLOGIES&rdquo;
 Font f = new &nbsp;Font&nbsp; (&ldquo;Arial &rdquo;, 50);
 Linear Gradient Brush &nbsp;b = new&nbsp;&nbsp; Linear&nbsp; Gradient Brush&nbsp;&nbsp;&nbsp; 
(new point&nbsp; (100, 100), new Point&nbsp; (200, 300), color. Red, color .yellow ); 
Int x =5; Graphics g;
 // abstract class 
<a style="background-color: #e94350; color: #ffffff; padding: 10px 20px;" href="net-tutorials" target="_blank" rel="noopener">Check Out .Net Tutorial</a>
<pre class="language-javascript"><code> Code for Button 1_ click

{

g = this .create Graphics ();

Draw String (S, f,b 10,10);

Timer 1. Enabled = true;

}

 Code for Timer 1_Tick event

{

X = X+3;

If (X &gt; 300) X= 0; 

Linear Gradient Brush b1 = new Linear Gradient Brush 

(new point (100, 100), new Point (x, 300), color. Red, color .yellow );

);

draw String (S, f,b, 10, 10);</code></pre>
 &nbsp;
<h3>Focus Related Events</h3>
&nbsp; <img class="alignnone size-full wp-image-7657" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_671.png" alt="Screenshot_67" width="407" height="263" /> 
Leave: This event will be executed while the cursor is coming out from control.
 Enter: This event will be executed while the cursor is Entering into control. 
Note:- Generally these events will be used in Data Validations &nbsp;
<h3>Example on Leave Event&nbsp;</h3>
<img class="alignnone wp-image-7658" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_682-460x215.png" alt="Screenshot_68" width="519" height="242" /> &nbsp;
 Open Windows Forms Application Project
 Place two Labels and two text boxes as shown 
Place error Provider control &agrave;Properties &agrave;Back Style = Always Blink 
<pre class="language-javascript"><code>Code for Text Box1 Leave Event {

If (text Box1. Text = &ldquo;&rdquo;)

Error Provider1. Set Error (text Box 1,&rdquo; Eno should not be Empty &ldquo;);

Else Error Provider1. Set Error (text Box 1,&rdquo; &ldquo; .);

// No Space

}

</code></pre>
<h3>Observations</h3>
Error Provider1. Set Error () takes two arguments
 Arg 1: The control Name, after which a blinking&nbsp; Icon needs to be displayed. 
Arg 2: Error Message, if this is empty, then blinking&nbsp; Icon will Will not be displayed. &nbsp;
<h2>Drag Related Events</h2>
C # supports four Types of Drag Related Events 
&nbsp; <img class="alignnone wp-image-7661" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_692-460x227.png" alt="Screenshot_69" width="489" height="241" /> &nbsp;
 To work with Drag Related Events, ALLOW DROP property must be set to true. 
Example: - 
A program for dragging the data from MS &ndash; word into .net text box. 
Open WFAP Place a text box - - &gt;&nbsp;&nbsp;properties - - &gt; &nbsp;Allow drop = true Multiline = true scroll bars = both 
<pre class="language-javascript"><code>Code for Text Box 1 Drag Enter Event

{

If (e. data. Get data present (Data Formats .Text) == true)

 {

String s = (String) . e. Data . Get Data (Data Formats. Text) ;

Text Box 1.Text = s;

}

else

Message Box. Show (&ldquo;Not valid&rdquo;);</code></pre>

Events in C# .Net | TekSlate C# Tutorials Online

Events in C# .Net

working-events-c-sharp-net-with-eaxmples

&nbsp;
<h2>Key Related Events</h2>
<ol>
<li>KeyPress</li>
<li>Key down</li>
<li>Key Up</li>
</ol>
&nbsp;The difference between Keypress and Key down:
<ul>
<li>In key press, logic will be executed Before displaying a character</li>
<li>In key down, logic will be executed After displaying a character</li>
<li>Key board character are divided into two types:-</li>
</ul>
&nbsp; <img class="alignnone wp-image-7668" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_703-460x208.png" alt="Screenshot_70" width="511" height="230" /> &nbsp; 
&nbsp;
<blockquote>
Interested in mastering .NET? Learn more about "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training </a>"in this blog post.
</blockquote>
<h3>Example of developing a Ball and Bat game:</h3>
<img class="alignnone size-full wp-image-7665" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_716.png" alt="Screenshot_71" width="340" height="284" /> &nbsp; &nbsp;
<ul>
<li>Open WFAP</li>
<li>Place a Label control <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;properties&nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /></li>
</ul>
Back&nbsp; Color = black Auto Size&nbsp; = false Location&nbsp; = 202, 440 Left,&nbsp;&nbsp;&nbsp; top
<ul>
<li>Place a Picture Box Control <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Properties&nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /></li>
</ul>
Image = Select an image Size mode&nbsp; = Stretch image Location&nbsp; = 13, 200 Left,&nbsp;&nbsp;&nbsp; top
<ul>
<li>Place a Timer with Enabled = true;</li>
<li>Place one more Timer with Enabled = false</li>
<li>Code for Form1_Keydown event</li>
</ul>
<pre class="language-javascript"><code>{

Int I = (int) e. keycode;

//Message Box. Show (I + &ldquo;&rdquo;);

If ((I = = 37) &amp;&amp; Label1.left &gt; 0 )

Label 1.left = Label1.left -3;

If ((I = = 39) &amp;&amp; Label1.left &lt; this. Width - 100 )

Label 1.left = Label1.left +3;

}</code></pre>
<ul>
<li>Code for Timer 1 _ Tick Event</li>
</ul>
<pre class="language-javascript"><code>{

Picture Box. Top = Picture Box 1. Top &ndash; 15;

If (Picture Box. Top &lt; 0)

{

Timer 1. Enabled = false;

Timer 1. Enabled = true;

}

</code></pre>
Code for Timer 2 _ Tick Event
<pre class="language-javascript"><code>{

Picture Box1. Top = Picture Box 1. Top +5;

Picture Box2. Left = Picture Box 1. Left +1;

If (Picture Box1. Top = Label1.Top &amp;&amp; Picture Box1.left &gt;Label1.left &amp;&amp; Picture Box1. Left &lt; Label1.right )

{

Timer 1.enabled = true;

Timer 2.enabled = false;

}</code></pre>
 &nbsp; <img class="alignnone size-full wp-image-7669" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_723.png" alt="Screenshot_72" width="452" height="557" /> &nbsp; &nbsp; 
2.Every item will be identified with a unique index number which tarts always from zero. &nbsp; 
<img class="alignnone size-full wp-image-7670" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_733.png" alt="Screenshot_73" width="349" height="185" /> &nbsp;
<ol start="3">
<li>Como box allows to select only one item at a time</li>
<li>The list box allows to select multiple items also.</li>
</ol>
&nbsp;
<a style="background-color: #e94350; color: #ffffff; padding: 10px 20px;" href="net-tutorials" target="_blank" rel="noopener">Check Out .Net Tutorial</a>
<h3>Common Properties and methods of list box and combo box:-&nbsp;</h3>
Properties:- &nbsp;
<ol>
<li>Items <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />used to add items at design time</li>
<li>Selected item</li>
<li>Selected Index</li>
</ol>
&nbsp; Methods: - 
&nbsp; <img class="alignnone wp-image-7671" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_742.png" alt="Screenshot_74" width="329" height="36" /> &nbsp;
<ol>
<li>Combo box1. Items Add (String)</li>
<li>Combo box1. Items Insert(index, String)</li>
<li>Combo box1. Items Remove(String)</li>
<li>Combo box1. Items Remove(index)</li>
<li>Combo box1. Items clear();</li>
<li>Combo box1. Items Index of (String)</li>
<li>Combo box1. Items Count&agrave;(property)</li>
<li>Combo box1. Items Get Enumerator ();&nbsp;&nbsp;</li>
</ol>
&nbsp;Example on combo box:-
A program to change the shape of&nbsp; a FORM 
&nbsp; <img class="alignnone size-full wp-image-7672" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_752.png" alt="Screenshot_75" width="221" height="640" /> &nbsp; 
Namespace <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />System Drawing. Drawing 2 D
 <img class="alignnone size-full wp-image-7673" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_762.png" alt="Screenshot_76" width="278" height="383" />
<ul>
<li>Open WFAP</li>
<li>Place a combo box <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />properties <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Items = add</li>
</ul>
&nbsp;
<ul>
<li>Using System . Drawing . Drawing 2 D;</li>
<li>Code for combo box 1 _ Selected Index changed Event</li>
</ul>
&nbsp; Graphics path g = new Graphics path ();
 Int I = combo box 1. Selected index; 
If&nbsp; (I = = 0) //circle
<ol>
<li>Add Ellipse (10, 10, 150, 150) ;</li>
</ol>
else if (i ==1 ) //ellipse
<ol>
<li>Add Ellipse (10, 10, 150, 400) ;</li>
</ol>
else //triangle {
<ol>
<li>Add Line (10, 10, 200, 300) ;</li>
<li>Add Line (200, 300, 100, 150) ;</li>
<li>Add Line (100, 150, 10,10) ;</li>
</ol>
} <img class="alignnone size-full wp-image-7675" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_782.png" alt="Screenshot_78" width="326" height="320" /> &nbsp; &nbsp;

Key Related Events  in C# .Net | Tekslate .Net Tutorial Online

Key Related Events  in C# .Net

key-related-events-c-net

&nbsp;
<h2>Exception handling&nbsp;</h2>
<img class="alignnone size-full wp-image-7680" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_801.png" alt="Screenshot_80" width="215" height="185" /> &nbsp; 
<pre class="language-javascript"><code>Try

{

Int s = int Parse (t1. text)

S = S + 1000;

MBS (S + &ldquo;&rdquo;);

} </code></pre>
<ol>
<li>Compile Time Problems are called errors.</li>
</ol>
EX: - Syntax errors &nbsp;
<ol start="2">
<li>Runtime problems are called an exception.</li>
<li>An exception is a run time condition which stops the normal execution of a program abnormally.</li>
<li>Generally, Exceptions will be raised</li>
</ol>
<blockquote>
&nbsp;Interested in mastering .NET? Learn more about "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.
</blockquote>
<ol>
<li>While Typecasting</li>
<li>While working with Files</li>
<li>While working with Databases</li>
<li>While managing the memory</li>
</ol>
&nbsp; &nbsp; &nbsp; 5.To work with exception handling .net introduced 4 keywords &nbsp; &nbsp; Try, Catch, finally and throw &nbsp;
<ol start="6">
<li>When an exception is expected from a block of code, then recommended writing this logic within the try block.</li>
</ol>
<ol start="7">
<li>The syntax for a try, catch, finally</li>
</ol>
&nbsp; Try{ &nbsp; --- --- --- -- } 
Catch&nbsp; (Type of exception obj)
 { } 
Catch (Type of exception obj)
 { }
 Finally
 { }
<ol start="8">
<li>Try block must be followed either with one catch, many catches, or ONE finally or ALL.</li>
</ol>
<ol start="9">
<li>The catch will be executed only when an exception is raised.</li>
<li>Finally will be executed always irrespective of exception.</li>
<li>In an exception is raised in line 2 then lines 3 and 4 will not be executed.</li>
<li>To handle the exception, Micro-soft introduced &ndash; 400 predefine classes.</li>
</ol>
&nbsp; &nbsp; &nbsp;<img class="alignnone wp-image-7681" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_813-460x361.png" alt="Screenshot_81" width="440" height="345" /> 
&nbsp; &nbsp;Exception class Hierarchy &nbsp;
 &nbsp; <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />File not formatted exception 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Invalid&nbsp;&nbsp; formatted exception &nbsp; &nbsp; &nbsp; &nbsp;
<h3>Example on Exception handling where multiple catches and finally:-</h3>
<ul>
<li>Open WFAP</li>
<li>Place a text box and a Button</li>
<li>Code for Button1 _ click</li>
</ul>
<pre class="language-javascript"><code>{

Try

{

Int S = int . Parse (text Box1.Text)

S =s + 1000;

Message Box. Show (&ldquo;Salary is &rdquo; + s);

String [] X = new String [] 

{

&ldquo;C #&rdquo;, &ldquo;VB&rdquo;

};

Message Box. Show (X [0]);

Message Box. Show (X [1]);

Message Box. Show (X [2]);

}

//try Catch (Format Exception fe)

{

Message Box. Show ( fe. Message);

}

Catch (Exception cd)

{

Message Box. Show (ed. Message );

}

Finally

{

Message Box. Show (&ldquo;From finally&rdquo;);

} 

</code></pre>
<h3>Working with File handling</h3>
<ol>
<li>&nbsp;Working with System. Io namespace is called &ldquo;File handling&rdquo;</li>
<li>Generally, File handling is used</li>
</ol>
<ul>
<li>To find Drives Information</li>
<li>To find Directory and files Information.</li>
<li>To create and delete files and directories.</li>
<li>To manipulate Files and folders.</li>
</ul>
&nbsp;
<ol start="3">
<li>Classes of System. Io namespace</li>
</ol>
&nbsp;
<ul>
<li>Directory: used to find Drives information</li>
<li>Directory info: To find the metadata of a directory or drive</li>
<li>File: used to do to operations like copy, delete, etc&hellip;.</li>
<li>File Info</li>
<li>Stream Reader</li>
<li>Stream writer</li>
</ul>
&nbsp;Methods of directory class &nbsp; 
Directory. Get Logical Drive&nbsp; () &agrave; returns all drive names. Directory. Get&nbsp; Directories&nbsp; (path) &agrave; returns all directory names. Directory. Get Files&nbsp; (path) &agrave; returns all files names. &nbsp; &nbsp; &nbsp;
<h3>Example of Directory class:-&nbsp;</h3>
<ul>
<li>Place a combo box and two List Boxes on the form</li>
<li>Using System.Io;</li>
<li>Code for form 1 _ load Event</li>
</ul>
&nbsp; String&nbsp; []&nbsp; X = Directory . Get Logical Drives (); 
For&nbsp; (int&nbsp; I = 0; I &lt; x. length ; I ++) 
Combo Box 1. Items . Add (X [1] )
 &nbsp; &agrave; Code for combo Box 1 Selected Index changed event &nbsp; 
<pre class="language-javascript"><code>List Box 1.Items . Clear ();

String P = Combo box 1. Selected Item . To string ();

Try

{

String [] x = Directory. Get Directories (p);

For (int I = 0; I &lt; x. length ; I ++)

List box1. Items a Add (X[i]);

}

Catch (Io Exception)

{

Message Box. Show (I .e Message) ;

}</code></pre>

Exception handling in C# .Net  | ..Net Study Guide | Tekslate

Exception handling in C# .Net

exception-handling-c-net

&nbsp;
<h2>Working with Stream Reader and Stream Writer class:-</h2>
<ol>
<li>Stream Reader is used to read the data from a file.</li>
<li>Stream Writer is used to write the data information in to file.</li>
</ol>
<h3>Methods of Stream Reader and Stream Writer classes:-</h3>
<img class="alignnone wp-image-7685" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/136-460x190.png" alt="1" width="561" height="230" /> &nbsp; &nbsp; 
String S = &ldquo;String /n ;&nbsp;
 String /n&hellip;&hellip;&hellip;..&rdquo; Write (&ldquo;abc&rdquo;); 
Write (&ldquo;xyz&rdquo;); 
Abc&nbsp; xyz &nbsp;
<h3>What is DOCK?</h3>
<ol>
<li>This is a property, which is available for all visible controls.</li>
<li>Dock property resizes a control Relatively with form Size.</li>
</ol>
<h3>What is the Anchor?</h3>
<ol>
<li>Anchor property repositions a control relatively with form size&nbsp;</li>
</ol>
<ul>
<li>Developing An application like a notepad</li>
<li>Options required in note pad</li>
</ul>
&nbsp; File&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Edit&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Format&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Help 
New&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Select All&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Fonts&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Help topics 
Open&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Cut&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Colors&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; About
 Save&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Copy 
Print&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Paste
 Exit &nbsp; 
&nbsp; The following controls are required to develop a notepad &nbsp;
<ol>
<li>Text Box</li>
<li>Menu Strip</li>
<li>Open File Dialog</li>
<li>Save File Dialog</li>
<li>Print Dialog</li>
<li>Color Dialog</li>
<li>Font Dialog</li>
</ol>
&nbsp; &nbsp;Interested in mastering .NET? Learn more about "<a style="box-sizing: border-box; color: #e03e2d; text-decoration-line: none; background-color: transparent; transition: all 0.2s linear 0s;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.
<ul>
<li>Open windows Forms Application Project name my note</li>
<li>Place all above 7 controls on the form</li>
<li>Choose text box <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />properties<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /></li>
</ul>
Multiline = true
 Dock = fill 
Scrollbars = both 
Allow drop = true
<ul>
<li>Select Menu strip control and design it with the above-discussed options</li>
</ul>
<ul>
<li>Assigning an Icon &nbsp;&nbsp;to a menu item</li>
</ul>
Right click on new <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />set Image <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />choose an image
<ul>
<li>Assigning a short &ndash; cut key</li>
</ul>
Right click on cut <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;properties <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;short cut key
<ul>
<li>Select a combination</li>
</ul>
<a style="background-color: #e94350; color: #ffffff; padding: 10px 20px;" href="net-tutorials" target="_blank" rel="noopener">Check Out .Net Tutorial</a>
<pre class="language-javascript"><code>{

Using System . Io;

Using System . Drawing .Printing

} 

Code for new menu Item (double click on new)

{

Text Box1. Text = &ldquo;&rdquo;;

}

Code for open menu Item

{

Open File Dialog 1. Show Dialog ();

String p = Open File Dialog 1. File Name;

Message box. Show (p);

Stream Reader sr = new Stream Reader (p);

Text box 1 .text = sr. Read To end ();

Sr. close ();

}

Code for save menu item

{

Save File Dialog 1. Show Dialog ();

String p = Save File Dialog 1 .File Name;

Stream Writer sw = new Stream Writer (p);

Sw. Write (text box1. text);

Sw. Flush ();

Sw. Close ();

}

Code for Print

{

Printer Setting ps = new Printer Settings ();

Print Dialog 1 .Printer Strings = ps;

Print Dialog1. Show Dialog ();

}

Code for exit {

Application .Exit ();

}

Code for Select ALL

{

Text box1.Select ALL();

} 

</code></pre>
Code for cut
text box 1.cut ();
<ul>
<li>Code for copy</li>
</ul>
text box1.copy ();
<ul>
<li>Code for paste</li>
</ul>
textbox1.paste ();
<ul>
<li>Code for Fonts</li>
</ul>
Font Dialog1.Show Dialog (); Text box 1. Font = font Dialog1. Font;
<ul>
<li>Code for colors</li>
</ul>
{ Color Dialog1. Show Dialog (); Text Box 1.fore color Dialog1. Color; }
<ul>
<li>Code for Help Topics</li>
</ul>
<pre class="language-javascript"><code>{

Label L =new label ();

Dock = Dock Style .Fill ;
Font = new Font (&ldquo;Arial&rdquo;, 20)
Text = &ldquo; Type Help messages here&rdquo; ;
Form f = new Form ();

control S .Add (L);
Show Dialog ();
}</code></pre>
 &nbsp;
 View menu <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Solution Explorer <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />right-click on my note (project name) <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />add &agrave; new item<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />About box and provide the name test &nbsp; 
<pre class="language-javascript"><code>Code for About
{

Test t = new Test ();

Show ();
} </code></pre>

Working with Stream Reader and Stream Writer class in C# .net

working-stream-reader-stream-writer-class-c-net

&nbsp;
<ol>
<li>A DLL file is called as an Assembly.</li>
</ol>
<img class="alignnone size-full wp-image-7688" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_128.png" alt="Screenshot_1" width="362" height="486" /> &nbsp;
<ol start="2">
<li>Assembly contains reusable code in the format of byte code.</li>
<li>A collection of classes is called namespace</li>
<li>Collection on namespaces is an assembly</li>
<li>Collection of Assemblies is FCL (Framework Class Library)</li>
<li>Assembly supports language interoperability</li>
</ol>
That is the assembly developed in C #.net can be used in Vb .net and ASP.net also and vice versa.
<ol start="7">
<li>In some cases, C #.net assembly may not work in VB.Net</li>
<li>To add an assembly</li>
</ol>
&nbsp;
<blockquote>
Interested in mastering .NET? Learn more about "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.
</blockquote>
Go to project menu &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Add reference <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp; Browse <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;choose a DLL file
<ol start="9">
<li>To import the classes of namespace &ldquo;using&rdquo; keyword is required.</li>
<li>DLL <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;System. DATA <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;System. DATA. OLEDB</li>
</ol>
&nbsp; &nbsp;
<ol>
<li>Assemblies are divided into two types</li>
<li>Private</li>
<li>Shared</li>
</ol>
<img class="alignnone size-full wp-image-7689" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_219.png" alt="Screenshot_2" width="310" height="611" /> &nbsp; &nbsp; &nbsp;
<ol>
<li>In private assemblies, all the referred DLLS will be copied automatically into LOCAL projects debug folder.</li>
<li>In shared assemblies, the referred DLLS will not be copied into LOCAL project debug folder.</li>
<li>Private assemblies occupies more memory when these are referred from many projects.</li>
<li>When many projects to be developed for the same client, then shared assemblies are recommended. if only one project is required for a client, then private assemblies are best.&nbsp; &nbsp;</li>
</ol>
<h3>Example on Private Assembly:-</h3>
&nbsp; Note: - To develop assemblies .net introduced class library project template
<ul>
<li>Open a class library project with the project</li>
<li>Private test (output will be a private test. dll)</li>
</ul>
&nbsp; Note:- DLL files are not executable, only it contains reusable code. &nbsp;
<h3>OBS: -</h3>
For every project, by default, a namespace will be created with the name of the project. &nbsp; 
Namespace private e test
<pre class="language-javascript"><code>{

Public class test

{

Public string M1 ()

{

Return &ldquo;form M1&rdquo;;

}

//M1

}

//test

} 

Namespace sub private Test

{

Public class test 2

{

Public String Print ()

{

Return &ldquo;from print&rdquo;;

}

//print

Public string PRINT ()

{

Return &ldquo;from PRINT&rdquo;;

}

//print

}

//test2

}//sub private test

}</code></pre>
//private test &nbsp; Build the project&nbsp; (build menu <img class="alignnone size-full wp-image-7566" style="font-size: 12pt;" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />build solution)&nbsp;&nbsp;
<h3>OBS:-</h3>
&nbsp; Private test. DLL is created under D:/C194 /private test / bin / debug folder with the following Structure &nbsp; 
<img class="alignnone size-full wp-image-7690" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_318.png" alt="Screenshot_3" width="353" height="203" /> &nbsp; &nbsp; 
Similar to System. Io
<ul>
<li>Calling private Test. DLL from a C #.net Windows Application Project</li>
</ul>
<ul>
<li>Open WFAP with project name c Test (C test or any name)</li>
<li>Go to project menu <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Add reference<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Browse <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;private Test .dll</li>
<li>Place a button</li>
</ul>
Using private test;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
both should be returned if one write, Using private test. Sub private Test;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; then only that namespace classes all user &nbsp; 
// code for button 
<pre class="language-javascript"><code>{

Test t = new test ();

Message Box . show (t. M1());

Test 2 S = new Test 2 ();

Message Box . show (S. Print ());

Message Box . show (S. Print ());

} 

</code></pre>
<h3>Execute the Project (f5):-</h3>
&nbsp; When the project is executed then private Test. DLL is copied into C :/c 194/Ctest/Bin/debug folder, hence private Test. DLL is a private assembly.
<ul>
<li>Calling Private Test.Dll from VB.net</li>
<li>Windows Application Project</li>
</ul>
&nbsp; <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />open vb.net windows Application Project with name V Test. &nbsp;
 Project Menu 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Add reference
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Browse
&nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Private Test. 
DLL Place a button Imports Private Test &nbsp; 
Imports Private Test. Sub Private Test //code for b1_click Dim t As New Test Message Box (t1. M1()) Dim S As New Test2 Message Box (S. print ())//can not be called. 
Note: - Test 2 is having two methods with name print and PRINT where the only case is different. This type of method is not accessible from VB.net because VB.net is not case sensitive. &nbsp;
<h3>&nbsp; &nbsp;&nbsp;Working with Shared Assemblies:-</h3>
C:/Windows/Assembly &nbsp;
<ol>
<li>ALL DLL file which is registered with GAC is called a shared Assembly.</li>
</ol>
GAC &ndash; Global Assembly cache
<ol start="2">
<li>C:/windows/Assembly folder is called as GAC.</li>
<li>Assembly folder a secured folder where copy and paste is not allowed.</li>
<li>A DLL, which contains a strong name can be registered with GAC.</li>
<li>A strong name is also called a public key token, which provides a unique identifier, to as an assembly.</li>
<li>Syntax to create a Strong name</li>
</ol>
Sn &ndash; K abc.snk &nbsp; Small case &nbsp;
<ol start="7">
<li>A DLL with strong name can be registered with GAC with the help of GacUtil tool.</li>
</ol>
&nbsp; Gacutil&nbsp; -I&nbsp; dll file
<ul>
<li>Small</li>
<li>Install</li>
</ul>
&nbsp; -u <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;uninstall
<h3>Example on shared Assembly:-</h3>
<ul>
<li>Open class library project with project name asc 123</li>
</ul>
&nbsp; Namespace ABC 123 { Public Class Test { Public String Get Test () { Return &ldquo;from get text&rdquo;; }//get text }//text }//ABC 123 &nbsp; &nbsp;
<h3>Steps to create a Strong name in C# .net</h3>
<ul>
<li>Open .net command prompt</li>
</ul>
(Start <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Programs <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Microsoft Visual Studio 2008 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Visual Studio Tools <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;visual Studio 2008 command prompt ) D: enter key
<ul>
<li>Cd c 1194</li>
<li>C 194 &gt; cd abs 123</li>
</ul>
&nbsp; Abc 123 &gt;cd bin Abc 123/bin &gt; cd debug &nbsp; 
OBS:-
 &nbsp; Abc.snk file is created with a strong name linking abc.snk in the current project Project menu
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Abc 123 Properties 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Signing
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />check the &ldquo;Sign the assembly&rdquo; checkbox
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Select &ldquo;browse&rdquo; from the combo box
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;choose ABC.snk file
<h3>Providing Meta Information&nbsp; (optional):</h3>
Project menu 
&nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />ABC 123 Properties 
&nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Application
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Click on the Assembly Information button and type some information. &nbsp; 
Build the project &nbsp;(build<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> build Solution) &nbsp; 
OBS:-
 ABC 123. DLL is created under D:/c194 /ABC 123 / Bin /Debug folder Open .net command prompt and type as follows Gacutil &ndash; I abc 123.dll &nbsp; 
OBS:- 
ABC 123. DLL is registered with GAC (C :/windows/Assembly)&nbsp; hence it is called as shared Assembly. 
Open windows Forms Application Project&nbsp; with Project name WINTEST Project menu 
&nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Add reference
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Browse
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Abc 123.dll Place a Button Using ABC 123 Namespace WINTEST
 Code for Button1_click
 {
 Test t&nbsp; = new Test ();
 Message Box. Show&nbsp; (t. Get Text ()); 
}
 Execute the Project&nbsp; (f5) &nbsp;
<h3>OBS:-</h3>
&nbsp; ABC123.DLL is not copied into D :/ c194/WINTEST/bin /Debug folder, hence Abc 123.DLL is a Shared Assembly &nbsp;
<h3>Note:-</h3>
&nbsp; All predefined assemblies are shared assemblies

Working with assemblies in C# .net | Tekslate

Working with assemblies in C# .net

working-assemblies-c-net

&nbsp;
<h2>Working with Windows Service:-</h2>
<ol>
<li>Service means a program.</li>
</ol>
A program, which is under the control of windows OS is called as Windows Service.
<ol start="2">
<li>Windows Service is used to develop Background processes.</li>
<li>Windows Service contains only Application logic BUT NOT GUI.</li>
<li>The controls which are not visible at run time can be placed in the Windows Service project.</li>
</ol>
&nbsp;&nbsp;&nbsp; &nbsp;Ex:- Timer, Event log, File System Watcher
<ol start="5">
<li>To develop Windows Service, .net introduced</li>
</ol>
File <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />New<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Project<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Visual C # &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Windows <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Windows Service project template. &nbsp; 
Note:- Windows Service project template is available in Professional Edition. it is not available in &nbsp;Standard Edition.
<ol start="6">
<li>To work with Windows Service, .net introduced System. Service Process Assembly.</li>
<li>Windows Service are not Executable directly by pressing F5</li>
<li>Windows Service is a class, which must be inherited from the Service base class.</li>
</ol>
&nbsp; <img class="alignnone wp-image-7700" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_517-460x235.png" alt="Screenshot_5" width="363" height="185" /> &nbsp; &nbsp; &nbsp;
<ol start="9">
<li>Every Windows Service by default hare two events</li>
</ol>
(a) On Start () will be executed when service is about to start. (b)On Stop () will be executed when service is about to stop. &nbsp;
&nbsp;
<blockquote>
Interested in mastering .NET? Learn more about "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.
</blockquote>
<ol>
<li>All the Windows Service will be located at</li>
</ol>
Start <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Settings &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Control panel <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Performance and Maintenance&nbsp; <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Administrative tools <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Services &nbsp; (or) Start<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Run &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Service. MSC
<ol start="4">
<li>Steps for developing windows Service</li>
</ol>
&nbsp; Step 1: Open windows service Project Template and write the code as required. 
Step 2:- Add the installers and build the project to get an Exe file. 
Step 3: Install the exe file with the help of INSTALLUTIL TOOL. 
Step 4: Open Service and start the service &nbsp;
<h3>Example 1 on Windows Service</h3>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;Develop a service to restrict the accessibility of calculator software, if the user trying to open the calculator then display a message like &ldquo; Your System is effected with virus Please shut down&rdquo; 
OBS:- &nbsp;
<ol>
<li>By default Message Box class is not in the scope of Windows service Project, hence System Windows. Forms assembly needs to be added.</li>
<li>The default Timer control is not supported by Windows service.</li>
<li>Especially for Windows service, a new Timer Control is developed, which needs to be added into the toolbox.</li>
<li>When software is opened, then that software&rsquo;s exe file name is added into processes (Ctrl&nbsp; + alt + del &agrave; Processes)</li>
</ol>
Open windows service project with project name WSI
<ul>
<li>Project menu <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Add Reference <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Windows.Forms</li>
</ul>
Adding Timer Control into tool Box. &nbsp; 
Open Tool Box
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Right click inside of General Tab 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp; choose Items
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Timer&nbsp; (System. Timers) Place Timer in Windows service with Enabled&nbsp; = false; 
Using System. Windows.Forms;
<pre class="language-javascript"><code>Code for Timer 1_ Elapsed event

{

Process [] p = process . Get Process ();

For (int I = 0; I &lt; p. length; I ++)

{

If (p [i].Process Name . To Upper () = = &ldquo;CALC&rdquo;)

{

P[i].KILL();

Message Box.Show (&ldquo;Your System is effected with virus please shutdown&rdquo;);

Break;

}

}

</code></pre>
//for &nbsp; Code for On Start ()
<pre class="language-javascript"><code>Event

{

Timer 1.Enabled = true;

}

Code for On Stop () Event

{

Timer 1.Enabled = false;

} </code></pre>
<h3>Adding the installers:-</h3>
&nbsp; <img class="alignnone wp-image-7701" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_615-460x244.png" alt="Screenshot_6" width="589" height="312" /> &nbsp; &nbsp; &nbsp;
 Build the Project&nbsp; (build&nbsp; menu &nbsp; <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Build Solution ) 
&nbsp;OBS:- 
WS1 .exe&nbsp; is created under D: / C194 / WS1 / Bin/Debug folder with a Service called as ABC 1 Installing the Service Open.net command prompt Debug&nbsp; &gt; install util &ndash; I ws1.exe The transacted install completed Service is installed&nbsp; with the name ABC 1 Staring the service Open Service&nbsp; (Start <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;run &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />service.MSC)
<ol>
<li>right-click on ABC 1 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Properties <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;login <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />check &ldquo;Allow Service to interact with desktop&rdquo; checkbox &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> ok</li>
</ol>
Note:- This step is required only when Service Contains a Message box.
<ol start="2">
<li>Right-click on ABC1 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Start</li>
</ol>
Adding Installers:- 
Open Service 1. Cs [Design]
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Right-click inside the body
 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Add Installer 
OBS:-
 Two controls will be added Service Process Installer 
<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Properties <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Account&nbsp; = Local System Service Installer &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />properties <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Service name = abc 2 Build the project&nbsp; (Build <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;build Solution) OBS:- Ws2.exe is created under D: / C 194 /ws2/bin/Debug &nbsp;folder with a Service called as ABC 2 Open. 
Net command prompt Change to D:/c 194 /ws2/bin/Debug folder Install Util &ndash; I ws2.exe Open service&nbsp; (Start <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;run <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />services.msc) Sight click on ABC 2 <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />start Then check C:/INET PUB/mail Root/Queue folder for a mail at 12:30
<ul>
<li>A program to Access and Controlling Windows Service Applications.</li>
</ul>
&nbsp; <img class="alignnone size-full wp-image-7703" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_718.png" alt="Screenshot_7" width="363" height="260" /> &nbsp;
 To access the service, a service controller class is required, which is the part of the Service process Assembly. Methods of the service controller class
<ol>
<li>Get Service (); // Returns all the Service names from Local computer.</li>
<li>Get Services (computer name); //Returns all the Service names from Specified computer</li>
<li>Start ()</li>
<li>Stop ()</li>
<li>Service name</li>
</ol>
<ul>
<li>Open WEAP</li>
<li>Place two buttons and a List box as shown</li>
</ul>
&nbsp; Project Menu<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Add Reference <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;System. Service Process &nbsp; 
Using System. Service Process; &nbsp; 
Code for GD Service Controller [] x;
<pre class="language-javascript"><code>Code for Formal_ load event

{

X = Service Controller . get Service ();

For (int I = 0; I &lt; x. length; I ++)

List Box1.Items .Add (x [i]. Service. Controller);

} 

Code for start button

{

Int I = list box1. Selected Index; X [i].Start ();

}

Code for stop button

{

Int I = list box1. Selected Index;

X [i].Stop();

}

 (Or)

X [I = List Box 1. Selected Index] .Stop (); </code></pre>

Working with Windows Service in C# .net | Tekslate

Working with Windows Service in C# .net

working-windows-service-c-net

&nbsp;
<h2>Windows Service with Mailing concepts:-</h2>
<ol>
<li>To send the mails SMTP protocol is required.</li>
<li>The protocol provides a set of rules, which need to be followed while transferring the data over the network.</li>
<li>Smtp will be installed by default when It is installed.</li>
<li>When IIS is installed then the Following Folder Structure will be created by default.</li>
</ol>
&nbsp; &nbsp; <img class="alignnone wp-image-7696" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_814-460x275.png" alt="Screenshot_8" width="555" height="331" /> &nbsp;
<h3>EX: 2 on windows Service with mailing concepts:-</h3>
<ul>
<li>Developing a service to send a mail at 12:30</li>
<li>Open windows Service project with project name WS2</li>
</ul>
&nbsp; Project&nbsp; Menu &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />Add Reference &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> System .wed&nbsp; (this is required for Mail Message class) Place Timer&nbsp; (System .Timers&nbsp; )control &nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" /> Properties &nbsp; Enabled = true Interval = 60, 000 &nbsp; Interval 100ms&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; w:30&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 12:30:00 01 1 sec&nbsp;&nbsp; = 600 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; .. 100ms = 60&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&hellip; 1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 60,000&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 59 60,000 &nbsp; 
Using System. web. Mail; 
<pre class="language-javascript"><code>Code for Timer 1 _ Elapsed Event

{

Int sh =Date Time . Now. Hour ;

// 24 hrs format

Int sum = Date Time . Now. Minute;

If (sh == 12 &amp;&amp; sm ==30)

{

Mail Message m = new Mail Message ();

M .to = &ldquo;teja @ yahoo.com&rdquo;; m.cc = &ldquo;varoon @india.com&rdquo;;

subject = &ldquo;Happy Pongal&rdquo;;
body Format = Mail Format. Html;
body = &lt;h1&gt;Happy pongal &lt;/h1&gt; &lt;hr&gt;
&lt;h2&gt;&lt;Font color = Green&gt; Dear Friends, This is to inform you that, our next class will be on 17th jan, 2009 &lt;/Font&gt; &lt;/h2&gt;&rdquo;;

Form = &ldquo;Prakash @ptpl&rdquo;;
//ptpl is computer name Smtp Mail .Send (m);

}

// if</code></pre>

Windows Service with Mailing concepts in C# .net

windows-service-mailing-concepts-c-net

&nbsp;
<h2>Working with Delegates in C# .net</h2>
<img class="alignnone wp-image-7704" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_1014-460x687.png" alt="Screenshot_10" width="401" height="602" /> &nbsp; &nbsp; &nbsp;
<ol start="2">
<li>Delegates hold the address of one function or address of many functions.</li>
</ol>
&nbsp;Interested in mastering .NET? Learn more about "<a style="box-sizing: border-box; color: #e03e2d; text-decoration-line: none; transition: all 0.2s linear 0s;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.
<h3>Delegates are divided into two types:-</h3>
&nbsp;
<ol>
<li>Single cast Delegate </li>
</ol>
<img class="alignnone size-full wp-image-8330" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_1016.png" alt="Screenshot_10" width="205" height="303" />
<h3>&nbsp;</h3>
<h3>&nbsp;</h3>
<h3>Multicast delegate</h3>
&nbsp; <img class="alignnone size-full wp-image-8331" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_1113.png" alt="Screenshot_11" width="395" height="342" />
<ul>
<li>SCD holds the address of one function only.</li>
<li>MCD allows holding the address of many functions.</li>
</ul>
&nbsp;
<h3>4.Steps to crates a Delegate:-</h3>
Step 1.&nbsp; Write a class with a method 
Syntax:-&nbsp;
 Class Test {
 Public void Print ()
 {
logic ;
}
 }
 Step 2. Create a Delegate &nbsp;
Syntax :- public delegate void D name ();
<ul>
<li>Keyword</li>
<li>Delegate name</li>
</ul>
Step 3 . create an object for the delegate with the address of a method. 
Syntax :-
 Test t&nbsp; = new Test () 
D name&nbsp; d = new D name&nbsp; (t. print); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
Step 4. Call the Delegate &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Syntax :-&nbsp; d (); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
Example on SCD :-
<ul>
<li>Open console Application Project</li>
<li>Code in GD (before Main ())</li>
</ul>
<pre class="language-javascript"><code>{

Class Test

{

Public void Print ()

{

Console .Write (&ldquo;From Print&rdquo;);

}

}

//test 

Public delegate void D name (); 

Code in main ()

Test t = new Test ();

D name d = new D name (t. print);

D();

Console. Read Line (); 

</code></pre>
OBS:-
Delegates encapsulate some information like class name and method names. &nbsp;
<h3>&nbsp;Working with Multicast Delegates:-</h3>
<ol>
<li>MCD holds the addresses of many functions.</li>
<li>MCD holds the sequence of functions</li>
<li>MCD supports arithmetic + and _ operations.</li>
<li>&lsquo;+&rsquo; operator add a function in to the sequence.</li>
<li>&lsquo;_&rsquo; operator removes a function from the sequence.</li>
</ol>
&nbsp; 
OBS: &nbsp;
 <img class="alignnone wp-image-7712" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_129-460x366.png" alt="Screenshot_12" width="447" height="355" /> 
D6= D5 &ndash; D3 &ndash; D2 = GM&nbsp; GA&nbsp; - GM&nbsp; GA&nbsp; - GA = GM &nbsp; &nbsp;
<h3>&nbsp;&nbsp;&nbsp;&nbsp; Example on MCD :-</h3>
<ul>
<li>open console Application Project</li>
<li>Code for GD (before Main ())</li>
</ul>
<pre class="language-javascript"><code> Class Test

{

Public void M1 ()

{

Console . Write (&ldquo;GM &rdquo;);

}

//M1

Public void M2 ()

{

Console . Write Line (&ldquo;GA&rdquo;);

}

//M2

}

// Test 

Public delegate void XYZ ();

Static void Main (Strings [] args) 

</code></pre>
<pre class="language-javascript"><code>Code in main ()

{

Test t = new Test ();

XYZ = d1, d2, d3,d4,d5,d6;

D1 = new XYZ (t. M1);

D2 = new XYZ (t.M2);

D3 = d1 + d2; Console. Write line (&ldquo;From D3 :&rdquo;);

D3 ();

D4 = d3 +d3;

Console. Write line (&ldquo;From D4 :&rdquo;);

D4 ();

D5 = d4- d1;

Console. Write line (&ldquo;From D5:&rdquo;); D5 ();

D6 =d5-d3-d2;

Console. Write line (&ldquo;From D6 :&rdquo;);

D6 ();

Console. Read line ();

} </code></pre>

Working with Delegates in C# .net | Tekslate

Working with Delegates in C# .net

working-delegates-c-net

&nbsp;
<h2>&nbsp;ADO.NET:-</h2>
<h3>Database programming with ADO.net:- &nbsp;</h3>
<ol>
<li>Generally, the output of the program will be stored in RAM.</li>
<li>RAM is volatile, that is after every execution RAM memory will be cleared.</li>
<li>To store the data permanently, .net is providing two ways</li>
</ol>
<ul>
<li>File handling</li>
<li>Database handling</li>
</ul>
&nbsp;
<h3>Problems with File handling while storing real-time data:-</h3>
&nbsp; 101&nbsp;&nbsp;&nbsp;&nbsp; teja&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5000 
102&nbsp;&nbsp;&nbsp;&nbsp; raviteja&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2000 
102&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ravi&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; xyz 
103&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ravi&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 6000 &nbsp;
<ol>
<li>The number of columns is not restricted.</li>
<li>The type of data is not allowed.</li>
<li>Possibility for data redundancy.</li>
<li>Different to manipulate the data.</li>
<li>No security for the data.</li>
</ol>
&nbsp;&nbsp;Interested in mastering .NET? Learn more about "<a style="box-sizing: border-box; color: #e03e2d; text-decoration-line: none; transition: all 0.2s linear 0s;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.
<ul>
<li>To overcome these problems, ANSI introduced database concepts</li>
</ul>
<ul>
<li>A collection of interrelated data is called as databases are divided into three types</li>
</ul>
&nbsp; <img class="alignnone wp-image-8339" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_136-460x290.png" alt="Screenshot_13" width="544" height="343" /> &nbsp;
<ul>
<li>Create table EMP ( eno number, ename varchar 2 (10),&hellip;&hellip;&hellip;&hellip;..)</li>
<li>Create table XYZ</li>
</ul>
<h3>&nbsp; ADO.NET (Active X Data objects for .net) &nbsp;</h3>
<ol>
<li>ADO.NET is an object library that is used to communicate with any database.</li>
<li>Object library means a set of predefined class (a set of the namespace)</li>
<li>ADO.NET is used to develop client Server Applications.</li>
</ol>
<img class="alignnone wp-image-8340" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_145-460x247.png" alt="Screenshot_14" width="473" height="254" /> 
&nbsp; &nbsp; &nbsp;C/S Architecture
<ol>
<li>NET supports 2 types of connection</li>
</ol>
&nbsp; <img class="alignnone wp-image-8341" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_156-460x256.png" alt="Screenshot_15" width="562" height="311" /> &nbsp;
<ol>
<li>Managed Connection</li>
<li>Unmanaged Connection</li>
</ol>
<h4>&nbsp;Managed connection:</h4>
 Managed connections work with the help of the TDS&nbsp; (Tabular data String) Protocol. &nbsp; 
<h4>Unmanaged Connection: </h4>
Unmanaged connections work with the help of OLEDB(object linking and Embedding &nbsp;&nbsp;Databases ) provides.
<ul>
<li>OLEDB providers are DLL files, which are COM components As Com is platform-dependent, hence connection on OLEDB are called an Unmanaged connection.</li>
</ul>
<h4>Managed connections are faster in data accessing. </h4>
&nbsp; <img class="alignnone wp-image-8342" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_166-460x262.png" alt="Screenshot_16" width="499" height="283" />
<ol>
<li>To work with ADO.net, Microsoft introduced System. Data Assembly, which contains 8 &nbsp;Namespaces.</li>
<li>these Namespaces are divided into 5 Groups.</li>
</ol>
&nbsp; Group 1:- 
common namespace
<ol>
<li>System. Data</li>
<li>System.Data.Common</li>
</ol>
<ol start="3">
<li>System. Data. SQL Types&nbsp;</li>
</ol>
&nbsp; Group 2:-
 Unmanaged Name Spaces 4.System. Data. OLEDB (Supports all type of databases) &nbsp; 
Group 3:- 
Managed Namespaces
<ol start="5">
<li>System. Data. SQL client (SQL Server only)</li>
<li>System. Data. oracle client (for oracle only ) (2.0)</li>
</ol>
&nbsp; Group 4:- 
ODBC Namespace
<ol start="7">
<li>System. Data. ODBC (supports all Databases)</li>
</ol>
&nbsp; Group 5:-
 LINQ Related Name Spaces
<ol start="8">
<li>System. Data. LINQ</li>
</ol>
<a style="background-color: #e94350; color: #ffffff; padding: 10px 20px;" href="net-tutorials" target="_blank" rel="noopener">Check Out .Net Tutorial</a>
&nbsp; EX 1:- With oracle over Unmanaged connection
<ol start="9">
<li>A program to create a table in oracle</li>
</ol>
<img class="alignnone wp-image-8343" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_175-460x140.png" alt="Screenshot_17" width="544" height="165" /> 
A procedure to find provider names automatically. &nbsp;
<ol>
<li>Open notepad, save the file with the name</li>
</ol>
&nbsp; &ldquo;one. UDL&rdquo; and close it File name&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;extension universal data Linker
<ol start="2">
<li>Double click on One .Udl file</li>
<li>Select provider</li>
<li>Choose &ldquo;Micro-soft oledb provider for oracle &rdquo; and click Next</li>
<li>Provide User name and password of oracle and click ok.</li>
<li>Right-click on one.udl &agrave;open with &agrave; note pad</li>
</ol>
&nbsp;
<ul>
<li>Open WFAP</li>
<li>Place a button</li>
</ul>
&nbsp; Using System. Data. Oledb; &nbsp;
<ul>
<li>
<pre class="language-javascript"><code>Code for Button 1 _click
{

Oledb connection con = new oledb connection 

(&ldquo;User id = Scott ; password = tiger; provider = msdaora.1&rdquo;);

Con. open ();

Message Box .show (&ldquo;Connections is ok&rdquo;);

String q = &ldquo;Create Table c 194 (Eno number, E name varchar 2 (10), Sql number)&rdquo;;

Oledb command cmd = new oledb command (q, con);

Try {

cmd. Execute Non query ()

Message Box. Show (&ldquo;Table is created &rdquo;);

}

Catch (oledb Exception oe)

{

Message Box. Show (oe. Message e );

} </code></pre>
</li>
</ul>
<h2>ADO.NET:-</h2>
<h3>Program to add records into c 194 table:-</h3>
<img class="alignnone size-full wp-image-8344" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_185.png" alt="Screenshot_18" width="370" height="279" /> 
Insert into c 194 value&nbsp; (101, &lsquo;Teja&rsquo;, 5000) &nbsp;
<ul>
<li>Open windows Forms Application Project</li>
<li>Design the form as shown Using System. Data . oledb</li>
<li>Code for Button 1_ click</li>
</ul>
<pre class="language-javascript"><code>String s = &ldquo;Insert in to c 194 values (&ldquo; + text box1.Text + &ldquo;, &lsquo; &ldquo; + text box2. Text + &ldquo;, &lsquo; &ldquo; + text box 3.text +&rdquo;)&rdquo;;

Message Box .show (s); Oledb _connection con = new loedb connection (&ldquo;provider = ms da or a.1 ; user id = scott; password = tiger &ldquo;);

Con. Open (); Oledb command cmd = new oledb command (s, con);

cmd. Execute Non query (); Message Box. Show (&ldquo;Record is added&rdquo;);

} </code></pre>

ADO.NET | .Net Study Guide | Tekslate

ADO.NET

ado-net

<h2>OLEDB Connection Class:</h2>
<ol>
<li>This class is used to open a connection with any type of database and also used to start transactions.</li>
<li>This class is inherited from the System. Data. Common.Connection class,</li>
</ol>
Which is an abstract class.
 <img class="alignnone wp-image-8337" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_195-460x313.png" alt="Screenshot_19" width="476" height="324" /> 
AS per the above observations, all types of connection classes will be having the same method names and same property names.
<table style="border-collapse: collapse; width: 100.012%; height: 46.514px;" border="1px" cellpadding="10">
<tbody>
<tr style="height: 46.514px; background-color: #ecf0f1; border-color: #ced4d9; border-style: solid;">
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</tr>
</tbody>
</table>
<blockquote>
&nbsp;
</blockquote>
<h4>Properties:-</h4>
<ol>
<li>Status:</li>
<li>Server version:</li>
<li>Connection String:</li>
<li>Provider:</li>
</ol>
<h4>Methods:-</h4>
<ol>
<li>open ()</li>
<li>close ()</li>
<li>Dispose ()</li>
<li>Begin Transaction</li>
</ol>
&nbsp; &nbsp; Con. open (); Con . close (); Con.&nbsp; Open ();
<h3>About oledb command class :</h3>
<ul>
<li>This class is used to execute DDL, DML, TCL, QL, and Stored procedures.</li>
</ul>
<table style="border-collapse: collapse; width: 100%; background-color: #ecf0f1; border-color: #ced4d9; border-style: solid; height: 50.4276px;" border="1px" cellpadding="5">
<tbody>
<tr style="height: 50.4276px;">
<td style="width: 98.4573%; height: 50.4276px; text-align: center;">Checkout our latest blog on <a style="color: #236fa1;" title=".Net Tutorial" href="https://tekslate.com/net-tutorials" target="_blank">.Net Tutorial</a></td>
</tr>
</tbody>
</table>
&nbsp; DDL:&nbsp; create, alter, drop DML:&nbsp; insert, delete, update TCL: commit, rollback, savepoint QL: select &nbsp; Stored Procedure is a collection of SQL Statements. &nbsp; 
Properties:-
<ol>
<li>Connection</li>
<li>Command Text</li>
<li>Command Type</li>
<li>Parameters</li>
</ol>
<h3>Methods:-</h3>
<ol>
<li>Execute Non-Query ():- is used to execute DDL, DML, TCL, and stored procedure.</li>
<li>Execute Reader (): need to be used when multiple records are expecting from a select statement.</li>
</ol>
Execute Reader ()&nbsp;&nbsp; returns Data reader.
<ol start="3">
<li>Execute Scalar (): Search only for the first match, its match is found, then only the first column value will be returned.</li>
</ol>
&nbsp; EMP&nbsp; 
&nbsp; ENO&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ENAME&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;SAL 
1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Ravi&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5000
<ol start="2">
<li>Teja 9000</li>
<li>Raj 8000</li>
<li>&nbsp;</li>
<li>.</li>
</ol>
1000 &nbsp; Select * from EMP ; 
Execute Reader&nbsp; () ALL
 Execute Scalar ()&nbsp; ALL &nbsp; &nbsp;

 OLEDB connection and command class in C# .net

OLEDB Connection and Command Class in C# .net

oledb-connection-command-class-c-net

&nbsp;
<h2>Working With DATA SET:-</h2>
&nbsp; <img class="alignnone wp-image-7779" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_235-460x219.png" alt="Screenshot_23" width="511" height="242" /> &nbsp;
<ol>
<li>Data Set is a class, which is a part of the System. Data namespace</li>
<li>Data Set supports connectionless architecture.</li>
<li>Data Set is a collection of Tables.</li>
<li>There will be no live communication between Data Set and Database.</li>
<li>Hence Data Adapters are required to provide communication in between Data Set And Database.</li>
<li>Data set holds a collection of tables, where every table contains a unique index number, optionally alias name can be provided.</li>
</ol>
Select&nbsp; * from EMP;
<ol start="7">
<li>Data Set Supports to create constraints like primary and foreign keys.</li>
<li>Data Set supports to create of Relations (Data Relation )</li>
<li>Data Set works with the help of XML (extensible markup language)</li>
</ol>
&nbsp;&nbsp;Interested in mastering .NET? Learn more about "<a style="box-sizing: border-box; color: #e03e2d; text-decoration-line: none; transition: all 0.2s linear 0s;" href="net-training" target="_blank" rel="noopener">.NET Training</a>" in this blog post.
<h3>Steps to create a DATA SET:-</h3>
&nbsp; <img class="alignnone wp-image-7780" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_244-460x281.png" alt="Screenshot_24" width="478" height="292" /> &nbsp; 
<h3>Data Set Ex:</h3>
 Program to prove that Data set is connections less Collection of tables XML based
 &nbsp; <img class="alignnone wp-image-7781" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_255-460x286.png" alt="Screenshot_25" width="402" height="249" />
<ul>
<li>Open windows Forms Application Project</li>
<li>Place four buttons and a Data Grid view control</li>
</ul>
Using&nbsp; System. Data. Sql client;
<ul>
<li>Code in GD</li>
</ul>
Data Set ds = new Data Set ();
<pre class="language-javascript"><code>Code for Button 1_click (get)
{

Sql connection con = new Sql connection (&ldquo;User id = sa; Password = ;

data base = north wind; Server = local Host&rdquo;) ;

Sql Data Adapter d1 = new Sql Data Adapter (&ldquo;Select * from products&rdquo; , con);

Sql Data Adapter d2= new Sql Data Adapter (&ldquo;Select * from orders &rdquo; , con);

D1.Fill (ds, &ldquo;pr&rdquo;); D2.Fill (ds,&rdquo;or&rdquo;);

Message Box. Show (&ldquo;Data is ready&rdquo;);

Code for Button 2_click

(products) 

DS----Tables or 1

{

Data Grid view 1. Data Source = ds . Tables [&ldquo;Pr&rdquo;]; 

or ds. Tables [0];

}

Code for Button 3_click (orders)

{

Data Grid view 1. Data Source = ds. Tables [&ldquo;or&rdquo;];

 or ds. Tables [1];

}

Code for Button 4_click (XML)
{

Ds. Write XML (&ldquo;C: //abc.XML&rdquo;)

Message Box. Show 1 (&ldquo;File is created&rdquo;);

} </code></pre>
<h3>Working with Data Set Manipulations:-</h3>
<ol>
<li>AS Data set is connectionless, hence the modifications on the data set will not be stored in the database.</li>
</ol>
25 columns
<ol start="2">
<li>Command builder is a predefined class that helps to create DML statement syntaxes automatically.</li>
<li>Command builder class purpose is to create the syntax only but not to Execute that syntax.</li>
<li>The command builder creates the syntax and needs to be given to Data Adapter.</li>
</ol>
<img class="alignnone wp-image-7783" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_265-460x109.png" alt="Screenshot_26" width="507" height="120" /> &nbsp;
<h4>Command Builder:</h4>
<ol>
<li>GET INSERT COMMAND()</li>
<li>GET UPDATE COMMAND()</li>
<li>GET DELETE COMMAND()</li>
</ol>
&nbsp;
<h4>Example&nbsp; &nbsp;on&nbsp; &nbsp;Command Builder with oracle Database over Managed Connection (System. Data. Oracle. Client)</h4>
Note:- Oracle client namespace is not available at the default scope of the project, hence System. Data. Oracle client Assembly needs to be added.
<ul>
<li>Open windows Forms Application Project</li>
<li>Place two Buttons and a data grid view control.</li>
</ul>
&nbsp; <img class="alignnone size-full wp-image-7784" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_275.png" alt="Screenshot_27" width="277" height="219" /> &nbsp;
<ul>
<li>Go to the project menu <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;Add reference&nbsp;<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />&nbsp;System.&nbsp; Data. Oracle client</li>
</ul>
Using&nbsp; System. Data. Oracle client
<ul>
<li>Code in GD</li>
</ul>
&nbsp; Static oracle connection con = new oracle connection (&ldquo;User id&nbsp; = Scott; Password = tiger &rdquo;); 
The provider is not required for a managed connection. 
<pre class="language-javascript"><code>Oracle Data Adapter da = new oracle Data Adapter (&ldquo;Select * from c 194&rdquo;, con);

Data set ds = new Data set (); Code for Button 1_ click (get) Da. Fill (ds, &ldquo;d&rdquo;);

Data Grid view 1. Data Source = ds .tables [&ldquo;d&rdquo;];

Code for Button 2_click (save) Oracle command builder cb = new; Oracle command builder (da);

Message Box. Show (cb. Get Insert command () )

Da. Insert command = cb. Get Insert command ();

Da. Update (ds, &ldquo;d&rdquo;);

Message Box. Show (&ldquo;Record is Added &rdquo;) ;

} </code></pre>
<h3>Data Set class Hierarchy:</h3>
A collection of Data set Related classes is called &ldquo;Data Set class Hierarchy&rdquo;. 
&nbsp; <img class="alignnone wp-image-7786" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_283-460x205.png" alt="Screenshot_28" width="383" height="170" /> 
DS <img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />T<img class="alignnone size-full wp-image-7566" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/arrrow.png" alt="arrrow" width="33" height="11" />1000 records
<ol start="8">
<li>R</li>
<li>Table [&lsquo;T&rsquo;] .Row [478]</li>
</ol>
[179] [N] FIRST N =0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
LAST N = DS. Tables [&lsquo;T&rsquo;]. Rows . count -1 Next N = N+1 Previous&nbsp; N = N-1 &nbsp; &nbsp; A program for navigating through the records &nbsp; 
<img class="alignnone size-full wp-image-7787" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_296.png" alt="Screenshot_29" width="427" height="286" />
<ul>
<li>open windows Forms Application Project</li>
<li>design a Form as shown</li>
<li>Using System . Data. Sql client;</li>
</ul>
&nbsp; Code in GD &nbsp; Data table dt = new Data Table ();
 Int n =0 ; 
<pre class="language-javascript"><code>Public void Show record ()

{

Data Row dr = dt. Rows [n];

Text Box1.Text = dr [0]. To String ();

Text Box2.Text = dr [1]. To String ();

}

</code></pre>
Code for Form 1_ load Event Sql Connection con = new sql Connection (&ldquo;User id = sa; data base = north wind; Server = Local Host&rdquo;);
Sql Data Adapter da = new Sql Data Adapter&nbsp;&nbsp; (&ldquo;Select&nbsp; * from Products&rdquo;, con); Data set ds = new Data set (); Da. Fill (ds, &ldquo;d&rdquo;);
 Dt = ds . Tables [&ldquo;d&rdquo;]; 
// column Names Label 1 .Text = dt. Columns [0]. Column Name; 
Label 2 .Text = dt. Columns [1]. Column Name; Show Record (); 
}
<ul>
<li>Code for Button 1_ click (&lt;&lt; First Record)</li>
</ul>
<pre class="language-javascript"><code>{

N =0; Show Record ();

}

Code for Button2_ click (&lt; Previous record )
{

N = n -1; If (n== -1) { Message Box. Show (&ldquo;No previous Record &rdquo;);

N = 0;

}

Show Record ();

}

Code for Button 3_click (&gt; Next Record)
{

N = n+1;

If (n &gt; dt. Rows. Count -1 )

{

Message Box . show (&ldquo; No Next Record&rdquo;);

N = dt. Rows. Count -1;

}

Show Record ();

}

Code for Butto4_ click (&gt;&gt; last Record)
{ 
N = dt. Rows . count &ndash; 1; 
Show Record ();
 } </code></pre>

Working With DATA SET in C# .net | Tekslate

Working With DATA SET in C# .net

working-data-set-c-net

Working with distributed programming in C# .net | Tekslate

Working with distributed programming in C# .net

working-distributed-programming-c-net

&nbsp;
<h3>Not Admin</h3>
Else 
{
 Message&nbsp; box. show(&ldquo;not Admin&rdquo;);
 new form().show ();
 } &nbsp;
<h3>Obs:- </h3>
Execute the project then roles.Exe will be created under D:c194Rolesbindebug. &nbsp;
DEPLOYMENT:-
(1)Windows XP &nbsp; <img class="alignnone wp-image-8396" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_563-460x107.png" alt="Screenshot_56" width="526" height="121" /> &nbsp; 
Main() { If(&ldquo;Hi&rdquo;);&nbsp;&nbsp;&nbsp; 
Source code
 }
<ul>
<li>Exe file is source code independent</li>
<li>Exe file executes successfully</li>
</ul>
<blockquote>
These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>".
</blockquote>
<h3>OBS:- </h3>
In the above diagram the copied exe file will be executed successfully in the client machine I,e the&nbsp; project is deployed successfully Same diag 
&nbsp; <img class="alignnone size-full wp-image-8397" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_573.png" alt="Screenshot_57" width="245" height="232" /> &nbsp; }
<ol>
<li>In this class, the project is not deployed successfully because in open it contains a file in the open method</li>
<li>In the bore diagram the copied exe file will not be executed as it depends on c:abc.txt file, hence along with exe file abc.txt also must be copied.</li>
</ol>
<ol>
<li>Deployment is a process providing all the required resources in order to execute an application successfully in the client machine.</li>
</ol>
&nbsp; <img class="alignnone wp-image-8398" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_583-460x290.png" alt="Screenshot_58" width="554" height="349" /> &nbsp; &nbsp;
<ul>
<li>client machine must have CLR Software</li>
<li>CLR Can be installed with the help of DOT NET FX35 Setup.exe file.</li>
<li>CLR Software is Free &ndash; Distributable.</li>
</ul>
i.e, No License need to be purchased.
<ol start="5">
<li>White a project is deploying all the resources like text file, image files, xml files need to be included.</li>
<li>To deploy the project. NET introduced</li>
</ol>
File<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" /> new project<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" /> other project Types<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" /> Setup and Deployment <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Setup wizard template. &nbsp;
<h3>Ex: A process to deploy Roles project</h3>
<ol>
<li>Open Roles project(Previous Example) and execute the project</li>
</ol>
Obs:-
 Roles.exe file will be created under D:C194 RolesBinDebug Folder
<ol start="2">
<li>Open setup wizard with project name ROLE Based Security</li>
</ol>
(This name will be displayed in welcome screen) 
3.Then a wizard will be opened 
W1) Click next 
W2) Select &ldquo;Create a setup for a windows application&rdquo; and click next.
 W3) Add the files like*.txt,*.jpg,*.xml etc, If required then click next 
W4) Click on finish 
&nbsp; <img class="alignnone size-full wp-image-8399" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_593.png" alt="Screenshot_59" width="452" height="813" /> &nbsp;
 &nbsp; &nbsp; Build the project(Build menu&agrave; Build solution) 
S:-Roles based security.msi and stup.exe files are created under
 c194roles based security/debug folder 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Only these two files need to be given to the client &nbsp;
<h3>Steps for oracle database deployment:- </h3>
<img class="alignnone size-full wp-image-8400" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_603.png" alt="Screenshot_60" width="387" height="459" /> &nbsp; &nbsp;
<ol>
<li>U(Sers),(or)(3)(Tables):(2)U&gt;</li>
</ol>
Export grants(yes/no):yes&gt; 
Export table data&lt;yes/no: yes&gt;
 Compress extents(yes/no): yes&gt;
 C:oracleora90Bin&gt;imp d:abc.dmp &nbsp; &nbsp; &nbsp; &nbsp;

Admin, DEPLOYMENT in C# .Net | Tekslate

Admin, DEPLOYMENT in C# .Net

admin-deployment-c-net

&nbsp;
<h3>.NET 3.5 Features:-</h3>
&nbsp;
<ol>
<li>Implicit type Declaration</li>
<li>Automatic properties (Auto- implemented properties)</li>
<li>Object initialize</li>
<li>Collection initialize</li>
<li>Anonymous types</li>
<li>Extension methods</li>
<li>Partial methods</li>
<li>LINQ Programming</li>
<li>Wpf Programming</li>
</ol>
<blockquote>
&nbsp; &nbsp; &nbsp;These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>"
</blockquote>
For in-depth knowledge on .Net Click on :
<ul>
<li><a href="net-tutorials" target="_blank" rel="noopener">.Net Tutorial</a></li>
<li><a href="design-patterns-in-net" target="_blank" rel="noopener">Design patterns in .net</a></li>
<li><a href="create-mvc-application-net-give-example" target="_blank" rel="noopener">Create MVC application in .NET</a></li>
<li><a href="c-net-data-type" target="_blank" rel="noopener">C#.net Data Types</a></li>
<li><a href="working-events-c-sharp-net-with-eaxmples" target="_blank" rel="noopener">Events in C# .Net</a></li>
</ul>

C# .NET 3.5 Features | .Net Tutorial Online | Tekslate

C# .NET 3.5 Features

c-net-3-5-features

Working with C# .Net | Tekslate  .Net Study Guide Online

Working with C# .Net

working-c-net

&nbsp;
<h2>Multithreading</h2>
<img class="alignnone wp-image-8423" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_724-460x106.png" alt="Screenshot_72" width="500" height="115" /> &nbsp;
<ol>
<li>Multi means many</li>
</ol>
Thread means process
<ol start="2">
<li>The process indicates either a part of a program or a complete program also</li>
<li>Multithreading is the concept of executing more than one process simultaneously.</li>
<li>Multithreading is used to develop parallel processing</li>
</ol>
Pentium iv 4.3 GHZ&agrave;43 Lakhs of instructions(cycle ) within 1min Speed
<ol start="5">
<li>Sharing CPU cycles efficiently is also called as &ldquo;Multi-Threading&rdquo;.</li>
<li>The operating system allocates a set of as cles based on the priority(importance)of the process.</li>
</ol>
Ctrl+ Alt+ del
<ol start="7">
<li>Based on above statement, the os are divided into two types:-</li>
</ol>
<blockquote>
Interested in mastering .Net Training? Enroll now for a FREE demo on "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.Net Training</a>"
</blockquote>
<h3>Single-Threaded</h3>
DOS UNIX 
&nbsp; <img class="alignnone wp-image-8424" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_743.png" alt="Screenshot_74" width="535" height="147" /> &nbsp; 
given to one app only&nbsp; &nbsp; &nbsp;
<h2>Multi-Threading</h2>
<img class="alignnone wp-image-8425" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_753-460x257.png" alt="Screenshot_75" width="523" height="291" /> &nbsp; &nbsp;
<ol start="8">
<li>If o/s handles only one process at a time, then it is called as &ldquo;single thread os&rdquo;.</li>
<li>Multi-thread os handles more than one process also</li>
<li>To work with multi-threading, NET introduced</li>
</ol>
System. Threading namespace
<ol>
<li>Classes of system. Threading namespace</li>
<li>a) Thread: Used to maintain the life aside of the threads</li>
<li>b) Thread start: Used to create the threads.</li>
<li>c) Mutex: Used in thread synchronization</li>
</ol>
&nbsp; &nbsp;
<h3>Thread life cycle:-</h3>
<img class="alignnone wp-image-8426" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_763-460x289.png" alt="Screenshot_76" width="570" height="357" /> &nbsp; &nbsp;
<h3>Four steps for writing threading applications:_</h3>
<ol>
<li>Write a class with methods</li>
</ol>
Class test {
 Public vaid print(){}
}
<a style="background-color: #e94350; color: #ffffff; padding: 10px 20px;" href="net-tutorials" target="_blank" rel="noopener">Check Out .Net Tutorial</a>
<ol start="2">
<li>Create an object for thread start delegate with the address of a function</li>
</ol>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Syntax:- 
Test t = new test(); 
Thread start ts=new thread start(t.print);
<ol start="3">
<li>Create a thread with the help of thread start object</li>
</ol>
Thread tr=new thread(ts); 
Start the thread Tr. start() &nbsp;
<h3>Example1:-</h3>
&nbsp; <img class="alignnone wp-image-8427" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_138-460x211.png" alt="Screenshot_1" width="635" height="290" /> &nbsp; 
A program to execute two for loops simultaneously 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Open console application project Using system. Threading; 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />code in GD Class test
<pre class="language-javascript"><code>{

Public static vold p1()

{

For (int i=1; i&lt;=10;i++)

{

Console. write(I+&rdquo;&rdquo;);

Thread . sleep(500);

}//for

}

//p1

Public static void p2()

{

For(int k=11;k&lt;20;k++)

{

Console. write link(k);

Thread. sleep(500)

//500 millisec

}//for

}

//p2 }//test 

</code></pre>
Code for the main method:-
Thread start ts1=new thread start (Test.p1) 
Thread start ts2=new thread start (Test.p2) 
Thread t1=new thread (ts1) 
Thread t2=new thread (ts1):
//here 
ts1 T1.start() T2.start() Console.Read key();
 T1.suspend(); Console. Read key(); 
T1.Resume(); Console. Read key (); 
o/p : 112233----2020 &nbsp;
<h3>Thread synchronization:-</h3>
<img class="alignnone wp-image-8428" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_226-460x373.png" alt="Screenshot_2" width="584" height="473" /> &nbsp; 
1.Thread synchronization is the concept of allowing only one thread at a time into one process
 2.It process is busy, threads need to wait in the queue 
3.Waiting threads will be executed based on priority
<ol start="4">
<li>Mutex is a class which controls waiting for threads with the help of wait one() and release mutex()&nbsp;</li>
</ol>
&nbsp; OBS: 
<img class="alignnone wp-image-8429" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_320-460x314.png" alt="Screenshot_3" width="519" height="353" /> &nbsp;
 5.The code which is written in between wait one()and release mutex()is called a synchronized code. &nbsp;
<h3>A Program to print &rdquo;ALL THE BEST&rdquo;3 TIMES WITH THE HELP OF THREADING:</h3>
<img class="alignnone wp-image-8430" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_420-460x125.png" alt="Screenshot_4" width="581" height="157" /> 
<pre class="language-javascript"><code>{

Console. write(&ldquo;ALL&rdquo;);

Console. write(&ldquo;THE&rdquo;);

Console. write(&ldquo;Best&rdquo;);

}

</code></pre>
<img class="alignnone size-full wp-image-7854" style="font-size: 12pt;" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />open console application project Using system. Threading; &nbsp; &nbsp;
<h3>Code in GD</h3>
<pre class="language-javascript"><code>Class program

{

Static mutex m = new mutex();

Class test

{

Public static void print()

{

wait one();
console. write(&ldquo;ALL&rdquo;);

Thread. sleep(1000);

Consote. write(&ldquo;THE&rdquo;);

Thread .sleep(1000);

Console. write(&ldquo;BEST&rdquo;);

Thread. sleep(1000);

Console. Write line();

//for new line Thread. sleep(1000);

Release mutex();
}//print }//test 

</code></pre>
Code for the main method:-
<pre class="language-javascript"><code>{

Thread start ts=new thread start(test. print);

Thread start t1=new thread (ts);

Thread start t2=new thread (ts);

Thread start t3=new thread (ts);

T1.Start(); T2.Start();

T3.Start();

Console. Read key();

} 

</code></pre>
Pointers:-
<img class="alignnone wp-image-8431" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_520-460x161.png" alt="Screenshot_5" width="537" height="188" /> 
Why we use pointers? For fast accessing Fig(a) Accessing &rsquo;i&rsquo; value is fast when compared to the pointer variable, but it is not in this case fast. Char*p&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 2B Double*p&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Logic is m/c of o/s they are unmanaged code.
 <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />The size of the pointers varies or dependent on the o/s, so they are unmanaged code, so c#.net only supports pointers but not implemented.
<ol>
<li>Pointer holds the address of a variable.</li>
<li>The pointer is unmanaged code in c#.net.</li>
<li>The pointer is also called an unsafe code.</li>
</ol>
Unsafe is a keyword Pointers logic must be the part of the unsafe block only Pointer size varies from o/s to o/s Generally o/s are divided into 3 types <img class="alignnone wp-image-8432" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_618-460x207.png" alt="Screenshot_6" width="544" height="245" /> &nbsp; 
Unmanaged code is not all recommended In c# .net it we want to use in c# by using un sate keyword 
Ex:- &nbsp;
Place a button on the form 
{
 Un sate { Int iz 90; Int*p; P=&amp;I; 
Int k; K=*p**p; MBS(K+&rdquo;&rdquo;); 
} 
By pressing f5 it gives a warning that you are using un state code. Please inform to CLR to execute unsafe code. 
Go to project 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />properties
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />build&agrave;Check Menu &ldquo;Allow un sate code&rdquo; Check Box Execute the project Inter+ view
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" /> Internal look-Behavior 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />subject
 <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />time sense
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Body language
 <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />confidence &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;

Multi Threading in C# .Net | Tekslate

Multi Threading in C# .Net

multi-threading-c-net

&nbsp;
<h2>Project Class in C#</h2>
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Executing the project under the client system, copy the project folders into the system from the cd. 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Open sql server2005 data base files folder
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />We will find two data base files 
&ldquo;ERES-Data &rdquo;and&rdquo; ERES-log&rdquo; 
Copy these two files into c:program filesMicrosoft sql server/ms sql/data. 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />goto sql server2005 management studio Start&agrave;run &agrave;program
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" /> sql server 2005
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Double click 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />We will be getting a wizard 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Server type: Data base Engine Server name: Run
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />cmd&agrave;host name
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />sys2 
Login:sa 
Password:123 
Authentication SQL Server Authentication 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Connect
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Select databasesv<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Right click<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />attach<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />click 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Add button<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />select PSA-Data mdf&agrave;Double click
 ERES
<blockquote>
These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>"
</blockquote>
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />OK&agrave;Symbol will be displayed 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Admin 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Consultancy people will be using ERES and conducting the test.
 <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Administrator(User) 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Candidates registered 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Subject details and Question bank details
 <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Experience 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Psychology test
 <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />ASP.NET and vb.net
 <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Manual evaluation 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Registration number(Consultancy) Profiles Languages Skills
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Asp.net questions(blocked) 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Recruiters, consultancy 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />candidate Registration 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Reports means total number of candidates appeared 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />9 modules in the project 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Time Restriction. 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Candidates login 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />DFD
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />How the data is flowing from one module to another module. Subjects data base 
&nbsp; <img class="alignnone size-full wp-image-8435" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_720.png" alt="Screenshot_7" width="429" height="284" /> &nbsp; 
<a style="background-color: #e94350; color: #ffffff; padding: 10px 20px;" href="net-tutorials" target="_blank" rel="noopener">Check Out .Net Tutorial</a>
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Enrollment is registration. <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />2 to 3 level 
<img class="alignnone wp-image-8436" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_816-460x243.png" alt="Screenshot_8" width="596" height="314" /> &nbsp; &nbsp; 
<img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Water fall model <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />Spiral model <img class="alignnone size-full wp-image-7854" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/11/Screenshot_242.png" alt="Screenshot_24" width="34" height="14" />RAD model
<h2>&nbsp; &nbsp;&darr;</h2>
Waterfall model

Project Class in C# .Net | .Net Tutorial online

Project Class in C# .Net

project-class-c-net

&nbsp;
<h2>ADD.NET [Active Data object for .NET]: </h2>
It is a specification for interacting with any database or XML documents. &nbsp; 
Base class library (BCL):
 It is a collection of rich class library definitions that can be used from any application developed using any language targeting the .NET &nbsp;
 Note: .NET achieves language independence with the support of CTS &amp; BCL. &nbsp; 
CLR: It is a collection of resources which are used for executing a .Net application within a .Net environment &nbsp; 
<img class="alignnone wp-image-8934" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_1116-460x324.png" alt="Screenshot_11" width="454" height="319" /> &nbsp; 
In C language: If we execute first .exe in c o/p will get directly &nbsp; 
In .NET Tech: If we execute first.exe in .Net the o/p will not get directly so it must be passed through CLR for O/p
<blockquote>
 These core tutorials will help you to learn the fundamentals of .NET. For an in-depth understanding and practical experience, explore Online "<a style="color: #e03e2d;" href="net-training" target="_blank" rel="noopener">.NET Training</a>"
</blockquote>
Executable file: Whenever an application can be executed by the DS without any support of external runtime environment or tools then such types of applications are called Executable File. <img class="alignnone size-full wp-image-8935" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_1212.png" alt="Screenshot_12" width="331" height="291" /> &nbsp; 
Metadata: It is used to maintain the information about the header files that are used within the application. 
Code: The code present within the executable code is a machine and platform-dependent format and hence the native platform can understand the code. 
&nbsp; X86 Instruction Set: It maintains the complete platform details which are needed for the execution &nbsp; 
Observation: An executable file provides the complete information which is needed for the OS for execution and hence no additional runtime environment is needed.&nbsp; &nbsp; 
Assembly: The compiled source code of any .Net application can be considered as an assembly. 
Note: 
<ul>
<li>If an assembly consists of the main method (entry point) then it is said to be an application (.exe0</li>
<li>If an assembly is defined without an entry point then it is said to be a class library (.dll)</li>
</ul>
&nbsp; <img class="alignnone wp-image-8936" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_1312-460x364.png" alt="Screenshot_13" width="535" height="423" /> &nbsp; 
Metadata [Data about Data]: 
It maintains the information about BCL, CL (base class library, class library), and dependency file information within the application 
Ex: In C <img class="alignnone size-full wp-image-8553" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Untitled1.png" alt="Untitled" width="36" height="12" />&nbsp;Header files 
<img class="alignnone wp-image-8937" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_1410-460x189.png" alt="Screenshot_14" width="517" height="212" /> &nbsp; 
<a style="background-color: #e94350; color: #ffffff; padding: 10px 20px;" href="net-tutorials" target="_blank" rel="noopener">Check Out .Net Tutorial</a>
MSIL code: The compiled source of any .Net application developed using any language will be in the format of MSIL instructions which is a platform and a machine-independent format code. &nbsp; 
Resources: It maintains the information about resources which are used in the application like audio-video clips, images, icons, cursor, fonts, etc. &nbsp; 
Manifest: It is used to maintain the information about the attributes of an assembly such as author name, company name, version of the application, etc. &nbsp;
 Observation: An assembly provides the details about itself but the information which is needed for the operating system will not be provided and hence the assembly cannot be executed directly by any OS. &nbsp; PEWRAPPER: [Portable Executable WRAPPER] It is used to invoke CLR for the execution
 CLR: It is a collection of resources which are used for executing .Net application within the .Net environment 
&nbsp; <img class="alignnone wp-image-8938" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_158-460x339.png" alt="Screenshot_15" width="498" height="367" /> &nbsp; <img class="alignnone size-full wp-image-8939" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_168.png" alt="Screenshot_16" width="309" height="301" /> <img class="alignnone wp-image-8940" src="https://newtekslateassets.s3.us-west-2.amazonaws.com/wp-content/uploads/2014/12/Screenshot_177-460x261.png" alt="Screenshot_17" width="487" height="276" />

Introduction to ADD.NET [Active Data object for .NET] | Tekslate

Introduction to ADD.NET [Active Data object for .NET]

introduction-add-net-active-data-object-net

<h2 style="text-align: justify;">.Net Sample Resume</h2>
6 1/2 Avenue, Manhattan's street
(416)-528 369
Rathod@gmail.com.
<h3 style="text-align: justify;">&nbsp;Profile Summary:</h3>
<ul style="text-align: justify;">
<li>3 years of Experience in software application using .Net technology.</li>
<li>Excellent knowledge in .Net technologies (Csharp, Asp.Net, win forms).</li>
<li>Expert in developing windows and Web applications.</li>
<li>Vast experience in SQL server database design, database maintenance, and developing T-SQL queries and Triggers.</li>
<li>Used HTML and Java scripts for developing web forms.</li>
<li>Good communication skills with a strong background to identify business objectives and establish requirements.</li>
</ul>
<h3>Key Skills:</h3>
<ul style="text-align: justify;">
<li>&nbsp;Development Tools: C, C++, Java, visual studio .Net 2003.</li>
<li>&nbsp;Operating Systems: Windows, Linux.</li>
<li>&nbsp;Databases: MS SQL Server 2005, MS Access, Oracle 11g.</li>
<li>&nbsp;Web Technologies: HTML, XML.</li>
</ul>
<h3>Education :</h3>
Bachelor of Engineering in Information technology, Brenau University, Washington.
<h3>Professional Experience:</h3>
3 years of experience in software developing applications at&nbsp;Australia New Zealand Banking Group.
<h3>Key Areas:</h3>
<ul style="text-align: justify;">
<li>Direct interaction with customers to explain the project features and requirements.</li>
<li>Understanding the requirement and designing the pages as per client requirements.</li>
<li>Good experience in visual studios and window form applications.</li>
<li>Developing databases like queries and triggers.</li>
<li>Monitoring application performance from time to time and making changes if necessary.</li>
<li>Working together with the project manager to ensure in time of project delivery.</li>
</ul>
<h3>Accomplishments :</h3>
<ul style="text-align: justify;">
<li>Troubleshooting issues and technical problems in applications.</li>
<li>Excellent communication skills and ability to conduct training sessions.</li>
</ul>
<h3>.NET Resume Secrets You Need To Know :</h3>
<ul style="text-align: justify;">
<li>Bold the most recent job titles you have held.</li>
<li>Invest time in highlighting the most relevant skills.</li>
<li>Showcase transparency in Employment Gaps (if any).</li>
<li>Make it clear in the &lsquo;Objectives&rsquo; that you are qualified for the types of jobs you are applying.</li>
<li>Feature your communication skills and quick learning ability.</li>
<li>Employ proficient terminology to speak about experiences in your Resume.</li>
</ul>