private static void OnIsDragDropEnabledChanged(DependencyObject target, DependencyPropertyChangedEventArgs args)
{
RadToolBarTray tray = (RadToolBarTray)target;
if ((bool)args.OldValue)
{
DragDropManager.RemoveDragInitializeHandler(tray, TrayDragInitialized);
DragDropManager.RemoveDragEnterHandler(tray, TrayDragEntered);
DragDropManager.RemoveDragOverHandler(tray, TrayDraggedOver);
DragDropManager.RemoveDragLeaveHandler(tray, TrayDragLeft);
DragDropManager.RemoveDropHandler(tray, TrayDropped);
}
if ((bool)args.NewValue)
{
DragDropManager.AddDragInitializeHandler(tray, TrayDragInitialized);
DragDropManager.AddDragEnterHandler(tray, TrayDragEntered);
DragDropManager.AddDragOverHandler(tray, TrayDraggedOver);
DragDropManager.AddDragLeaveHandler(tray, TrayDragLeft);
DragDropManager.AddDropHandler(tray, TrayDropped);
}
}