private void Window_Loaded(object sender, RoutedEventArgs e)
 {
     clientObject = OperateResult.SystemObject.GetInstance();
     if (clientObject.ObjCardReader != null)
     {
         clientObject.ObjCardReader.CardNoGeted += new SeatManage.ISystemTerminal.IPOS.EventPosCardNo(ObjCardReader_CardNoGeted);
         clientObject.ObjCardReader.Start();
     }
 }
 /// <summary>
 /// 获得单个SystemObject实例
 /// </summary>
 /// <returns></returns>
 public static SystemObject GetInstance()
 {
     if (_systemObject == null)
     {
         lock (Object)
         {
             if (_systemObject == null)
             {
                 return(_systemObject = new SystemObject());
             }
         }
     }
     return(_systemObject);
 }