CommandField.ValidateSupportsCallback Method

Determines whether the controls contained in a CommandField object support callbacks.

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

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

Exception typeCondition

NotSupportedException

The Select button is displayed in the CommandField object. The CommandField class does support callbacks when the Select button is displayed.

The ValidateSupportsCallback method is a helper method used to determine whether the controls contained in a CommandField object support callbacks. The CommandField class does not support callbacks when the Select button is displayed. This method has been implemented to throw a NotSupportedException exception when the Select button is displayed.

NoteNote:

This method is used primarily by control developers.

Notes to Inheritors: Classes that derive from the CommandField 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

Community Additions

ADD
Show: