Waitfor (receive * from queue) not waiting for queue to be filled

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SQL-Server-2012

i don't know how to start this question but.
i am working on order notification module where i want to notify window service when new order arrived in database,for this i am using sqlnotificationrequest class and registered query (e.g. "select orderid from ordertable"),also created listener which will wait for query "WAITFOR (RECEIVE * FROM ConditionalOrderChangedMessages)"to be execute.
but this query running infinite time.i don't know from where this queue get message that it execute "WAITFOR (RECEIVE * FROM ConditionalOrderChangedMessages)"
command.

below is code to register notification

private void RegisterSqlNotificationRequest()
      {
          if (request == null)
          {
              Guid guid = new Guid();
              request = new SqlNotificationRequest();
              request.UserData = "FWMarketDataEngine-" +serviceName + "-" + guid;
              request.Options = String.Format("Service={0};", serviceName);
              request.Timeout = notificationTimeout;
          }
          if (OnChanged != null)
          {
              OnChanged(this, null);
          }
      }

/// <summary>
     /// Monitoring the Service Broker queue.
     /// </summary>
     private void Listen()
     {
         try
         {
             using (SqlConnection conn = new SqlConnection(connectionString))
             {
                 using (cmd = new SqlCommand(listenSql, conn))
                 {
                     if (conn.State != ConnectionState.Open)
                     {
                         conn.Open();
                     }
                     cmd.CommandTimeout = notificationTimeout + 150;
                     using (SqlDataReader reader = cmd.ExecuteReader())
                     {
                         while (reader.Read())
                         {
                             //for (int i = 0; i <= reader.FieldCount - 1; i++)
                             //    Debug.WriteLine(reader[i].ToString());
                         }
                     }
                 }
             }
         }
         catch (Exception ex)
         {
             Console.WriteLine(ex.Message);
             isTimeout = true;
         }
         //fnCleanUp_Queue_Messages();
         if (iResetCounter++ == MAX_RESET)
         {
             ReRegisterSqlNotification();
             iResetCounter = 0;
         }
         else
         {
             RegisterSqlNotificationRequest();
         }
         //Logger.Log("Monitoring the Service Broker queue.");
     }

private void fnGetSyncData()
      {
          if (conn == null)
          {
              conn = new SqlConnection(connectionString);
          }

          if (command == null)
          {
              command = new SqlCommand(GetSelectSQL(), conn);
          }

          if (dataToWatch == null)
          {
              dataToWatch = new DataSet();
          }
          notification = null;
          notification = new SqlNotificationRequestRegister(GetListenerSQL(), serviceName, timeOut, connectionString);
          notification.OnChanged += NotificationOnChanged;
          FetchDataFromDatabase();
          notification.StartSqlNotification();

      }

since "WAITFOR (RECEIVE" executing multiple time below line also executing multiple time and sending notification to window service.

using (SqlDataReader reader = cmd.ExecuteReader())

i am new to sql service broker framework, don't know what to do
Thanks,

What I have tried:

sql notification