public bool CloseConnection()
 {
     try
     {
         StaticClassReaderB.CloseSpecComPort(openComIndex);
         logger.Info("Closed port {0} to UhfReader18", openComIndex);
         return(true);
     }
     catch (Exception ex)
     {
         logger.Error("Close connection: {0}, {1}", ex.Message, ex.StackTrace);
     }
     return(false);
 }