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<title>ASP.NET Validation Server Controls</title>
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
<h1>Validation Server Controls</h1>
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<p class="intro">Validation server controls are used to validate user-input.</p>
<hr />
<h2>Validation Server Controls</h2>
<p>A Validation server control is used to validate the data of an input control.
If the data does not pass validation, it will display an error message to
the user.</p>
<p>The syntax for creating a Validation server control is:</p>
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<pre><asp:control_name id="some_id" runat="server" /></pre>
</td>
</tr>
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<table class="ex" border="1" width="100%">
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<th width="40%" align="left">Validation Server Control</th>
<th width="60%" align="left">Description</th>
</tr>
<tr>
<td valign="top"><a href="control_comparevalidator.asp">CompareValidator</a></td>
<td valign="top">Compares the value of one input control to the value of
another input control or to a fixed value</td>
</tr>
<tr>
<td valign="top"><a href="control_customvalidator.asp">CustomValidator</a></td>
<td valign="top">Allows you to write a method to handle the validation of
the value entered</td>
</tr>
<tr>
<td valign="top"><a href="control_rangevalidator.asp">RangeValidator</a></td>
<td valign="top">Checks that the user enters a value that falls between two
values</td>
</tr>
<tr>
<td valign="top"><a href="control_regularexpvalidator.asp">RegularExpressionValidator</a></td>
<td valign="top">Ensures that the value of an input control matches a
specified pattern</td>
</tr>
<tr>
<td valign="top"><a href="control_reqfieldvalidator.asp">RequiredFieldValidator</a></td>
<td valign="top">Makes an input control a required field</td>
</tr>
<tr>
<td valign="top"><a href="control_validationsummary.asp">ValidationSummary</a></td>
<td valign="top">Displays a report of all validation errors occurred in a
Web page</td>
</tr>
</table>
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