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CustomValidator.ServerValidate Event

Occurs when validation is performed on the server.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

member ServerValidate : IEvent<ServerValidateEventHandler,
<asp:CustomValidator OnServerValidate="ServerValidateEventHandler" />

The ServerValidate event is raised when validation is performed on the server. This event is used to provide a custom validation routine for an input control, such as a TextBox control.

For more information about handling events, see Events and Delegates.

Walkthrough: Validating User Input in a Web Forms PageBuilding ASP .NET Web Applications in Visual Studio

The following code example demonstrates how to specify and code a handler for a server-side CustomValidator control. It creates a custom validation routine, validates the value of a TextBox control for an even number, and then displays the result of the validation.

Security noteSecurity Note

This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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