ValidateSupportsCallback Method

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 override void ValidateSupportsCallback()

Exception Condition
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.

System_CAPS_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.

.NET Framework
Available since 2.0
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