CanUndo Method (CommandHandler)

This overridable predicate controls whether or not the Undo command is executed.

Syntax

public virtual bool CanUndo()

by default, this returns true if the diagram is not IsReadOnly, if AllowUndo is true, and if the diagram's model's Northwoods.GoXam.Model.UndoManager Northwoods.GoXam.Model.UndoManager.CanUndo predicate returns true.