CustomValidator::OnServerValidate Method
Raises the ServerValidate event for the CustomValidator control.
Assembly: System.Web (in System.Web.dll)
Parameters
- value
- Type: System::String
The value to validate.
Return Value
Type: System::Booleantrue if the value specified by the value parameter passes validation; otherwise, false.
The ServerValidate event is raised when validation is performed on the server.
Raising an event invokes the event handler through a delegate. For more information, see Events and Delegates.
The OnServerValidate method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to InheritorsWhen overriding OnServerValidate in a derived class, be sure to call the base class's OnServerValidate method so that registered delegates receive the event.
The following code example demonstrates how to specify and code a handler for a server-side CustomValidator control.
Security Note |
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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. |
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Security Note