Called by Undo to perform an undo action.
Assembly: System.Design (in System.Design.dll)
Do not call the method directly; override it if you want, but always call the public Undo method to perform undo work. The Undo method notifies the undo engine to suspend undo-operation data gathering until the current undo operation is completed. This prevents new undo units from being created in response to this unit doing work.
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.