Validator Callout Extender

                   This control is used with validation controls to display the error message in a callout. It has only one important property TargetcontrolID.


The following example demonstrates how to use valiudatorcalloutextender.

Add a page to the website and then take a Toolkit scriptmanager & a Textbox & a requiredfillvalidator & a button on the page and set following properties for the required field validator.

controlTovalidate        :        Textbox1

ErrorMessage               :        This TextBox must not be Blank

Display                          :        None

Within HTML source of the page Drag & drop a validatorcalloutextender & set its Target controlID to the ID of required field validator that os ‘Required field validator1’