public override void Assign(RepositoryItem item)
 {
     BeginUpdate();
     try
     {
         base.Assign(item);
         RepositoryItemEM_CustomToggle source = item as RepositoryItemEM_CustomToggle;
         if (source == null)
         {
             return;
         }
         BrushOn  = source.BrushOn;
         BrushOff = source.BrushOff;
     }
     finally
     {
         EndUpdate();
     }
 }
 static EM_CustomToggleBarEditItem()
 {
     RepositoryItemEM_CustomToggle.RegisterEM_CustomToggle();
 }