public override void DisconnectItem(int cell, object item)
 {
     if (item is ILogicEventReceiver)
     {
         ILogicEventReceiver logicEventReceiver = item as ILogicEventReceiver;
         logicEventReceiver.ReceiveLogicEvent(0);
         logicEventReceiver.OnLogicNetworkConnectionChanged(false);
     }
     else if (item is ILogicEventSender)
     {
         ILogicEventSender logicEventSender = item as ILogicEventSender;
         logicEventSender.OnLogicNetworkConnectionChanged(false);
     }
 }