The UndoManager type exposes the following members.

Constructors

	Name	Description
	UndoManager	Initializes a new instance of the UndoManager.

Methods

	Name	Description
	CancelLastSnapshot	Removes the last snapshot from the undo stack, and restores the redo stack.
	CanRedo	Returns true if this UndoManager can currently perform a redo. returns false otherwise.
	CanUndo	Returns true if this UndoManager can currently perform an undo. Returns false otherwise.
	Redo	Performs a redo on the DiagramSurface known to this UndoManager.
	Reset	Resets this UndoManager by deleting its undo history.
	TakeSnapshot	Saves a DiagramState 'snapshot' of the DiagramSurface known to this UndoManager. This method should be called AFTER an action has modified the DiagramSurface.
	Undo	Performs an undo on the DiagramSurface known to this UndoManager.