DataObjectEventArgs.CancelCommand Method
Cancels the associated command or operation.
Assembly: PresentationCore (in PresentationCore.dll)
This method sets the CommandCancelled property to true. After an event has been canceled, it cannot be reactivated.
If this method is called on a drag-and-drop operation (as indicated by the IsDragDrop property), the entire drag-and-drop operation is canceled.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, 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.