When overridden in a derived class, signals that the controls contained by a field support callbacks.
Assembly: System.Web (in System.Web.dll)
The 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.
This method is used primarily by control developers.
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 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