private void __CoAsynExitGroupRunning(GroupDevice group)
 {
     try
     {
         group.Exit();
     }
     catch (System.Exception ex)
     {
         group.excetion = ex as ExitGroupExcetion;
     }
 }
 protected void CoSynExitGroup(GroupDevice group)
 {
     try
     {
         group.Exit();
     }
     catch (System.Exception ex)
     {
         throw ex;
     }
 }