12 references to UndoStack
PresentationFramework (12)
MS\Internal\Documents\UndoManager.cs (12)
433if (!(_topUndoIndex < UndoStack.Count && PeekUndoStack() == null) // Non-null topmost stack item 434&& (UndoLimit == -1 || UndoStack.Count < UndoLimit)) 436UndoStack.Add(unit); 447UndoStack[_topUndoIndex] = unit; 629if (_topUndoIndex < 0 || _topUndoIndex == UndoStack.Count) 635return UndoStack[_topUndoIndex] as IUndoUnit; 865if (UndoStack.Count == 0 || _topUndoIndex < 0) 1103if (UndoStack.Count > 0) 1105UndoStack.Clear(); 1106UndoStack.TrimExcess(); 1123IUndoUnit unit = (IUndoUnit)UndoStack[_topUndoIndex]; 1124UndoStack[_topUndoIndex--] = null;