public static void RemoveItemRemovingHandler(DependencyObject d, ItemRemovingEventHandler handler)
        {
            var element = d as UIElement;

            if (element != null)
            {
                element.RemoveHandler(ItemRemovingEvent, handler);
            }
        }
 public static void RemoveItemRemovingHandler(UIElement element, ItemRemovingEventHandler eventHandler)
 {
     element.RemoveHandler(ItemRemovingEvent, eventHandler);
 }
 public static void AddItemRemovingHandler(UIElement element, ItemRemovingEventHandler eventHandler)
 {
     element.AddHandler(ItemRemovingEvent, eventHandler);
 }