DataControlField.ValidateSupportsCallback Method

When overridden in a derived class, signals that the controls contained by a field support callbacks.

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

public virtual void ValidateSupportsCallback ()
public void ValidateSupportsCallback ()
public function ValidateSupportsCallback ()
Not applicable.

Exception typeCondition

NotSupportedException

The method is called on a default instance of the DataControlField class.

The ValidateSupportsCallback method is a helper method used to determine whether the controls contained in a DataControlField object support callbacks. The base implementation of this method has been implemented to throw a NotSupportedException exception to indicate that callbacks are not supported.

NoteNote:

This method is used primarily by control developers.

Notes to Inheritors: Classes that derive from the DataControlField class can override this method to indicate whether the controls contained by the field support callbacks. To indicate that callbacks are supported, implement this method as an empty method that does not throw an exception; otherwise, throw an exception with a useful message describing why callbacks are not supported.

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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