ContentUndoHelper Constructor

Constructs a ContentUndoHelper object inside a using block to handle undo when modifying a RenderContent or - alternatively - create the ContentUndoHelper and explicitly call Dispose when you are done.

DEPRECATED: Constructs a ContentUndoHelper object inside a using block to handle undo when modifying a RenderContent or - alternatively - create the ContentUndoHelper and explicitly call Dispose when you are done.