How to get message constantly from remote IBM MQ

I created a windows service that will connect to remote MQ and get the message as MQSTR format but after getting the message I didn't closed connection to remote MQ . My windows service will continuously check if data is available in remote MQ or not but after getting one message I need to restart my service to get the another message from remote MQ . Can anyone tell me what I need to do to get message constantly from remote MQ . Any clue or any link will do fine . Please Help

My C# windows service code is like this :

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;

namespace MQ_listner
{
    static class Program
    {
        static void Main()
        {
            ServiceBase[] ServicesToRun;
            ServicesToRun = new ServiceBase[]
            {
                new Service1()
            };
            ServiceBase.Run(ServicesToRun);


        }
    }
}

Service1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading;
using System.Threading.Tasks;


namespace MQ_listner
{
    public partial class Service1 : ServiceBase
    {
        private MQReader MQReader;
        private string _serviceName = "MQ_Listener";
        private DateTime _TimeStart;
        private bool _run = true; 
        private Thread _thread;
        int WaitWhenStop = 0;
        private DateTime _TimeEnd;
        private TimeSpan _TimeDifference;
        private TimeSpan _TimeElasped = new TimeSpan(0);



        public Service1()
        {
            InitializeComponent();
        }

        protected override void OnStart(string[] args)
        {
            try
            {
                EventLog.WriteEntry(_serviceName + "was started at" + _TimeStart.ToString());
                _run = true;

                _thread = new Thread(new ThreadStart(StartMQListenerService));
                _thread.IsBackground = true;
                _thread.Start();
            }
            catch (Exception ex)
            {
                EventLog.WriteEntry(_serviceName + "was not started . Error Message : " + ex.ToString());
            }


        }

        protected override void OnStop()
        {
            _run = false;
            _thread.Join(WaitWhenStop);

            _TimeEnd = DateTime.Now;
            _TimeDifference = _TimeEnd.Subtract(_TimeStart); 
            _TimeElasped = _TimeElasped.Add(_TimeDifference);
            EventLog.WriteEntry(_serviceName + "was stopped at " + _TimeEnd.ToString() + "\r\n ran for total time :" + _TimeElasped.ToString());
        }


        // MQ connection service 

        public void StartMQListenerService()
        {
            try
            {
                if (_run)
                {
                    if (MQReader == null)
                    {
                        MQReader = new MQReader();
                        MQReader.InitializeConnections();
                        EventLog.WriteEntry(_serviceName + "MQ connection is established");
                    }
                }
            }
            catch (Exception ex)
            {
                System.Diagnostics.EventLog.WriteEntry(_serviceName, ex.ToString());
                System.Diagnostics.ProcessStartInfo startinfo = new System.Diagnostics.ProcessStartInfo();
                startinfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
                startinfo.FileName = "NET";
                startinfo.Arguments = "stop" + this.ServiceName;
                Process.Start(startinfo);
            }
        }
    }
}


****MQReader.cs****

using System;
using IBM.WMQ;
using System.Diagnostics;
using System.IO;
using System.Xml;
using System.Linq;
using System.Xml.Linq;
using System.Configuration;

namespace MQ_listner
{
    internal class MQReader
    {
        public MQReader()
        {
        }
        public void InitializeConnections()
        {

            MQQueueManager queueManager;
            MQMessage queueMessage;
            MQGetMessageOptions queueGetMessageOptions;
            MQQueue queue;


            string QueueName;
            string QueueManagerName;
            string ChannelInfo;
            string channelName;
            string PortNumber;
            string transportType;
            string connectionName;

            QueueManagerName = ConfigurationManager.AppSettings["QueueManager"]; 
            QueueName = ConfigurationManager.AppSettings["Queuename"];
            ChannelInfo = ConfigurationManager.AppSettings["ChannelInformation"];
            PortNumber = ConfigurationManager.AppSettings["Port"];
            char[] separator = { '/' };
            string[] ChannelParams;
            ChannelParams = ChannelInfo.Split(separator);
            channelName = ConfigurationManager.AppSettings["Channel"];
            transportType = ConfigurationManager.AppSettings["TransportType"];
            connectionName = ConfigurationManager.AppSettings["ConnectionName"];
            String strReturn = "";

            try
            {
                queueManager = new MQQueueManager(QueueManagerName,
                channelName, connectionName);
                strReturn = "Connected Successfully";

                queue = queueManager.AccessQueue(QueueName,
                MQC.MQOO_INPUT_AS_Q_DEF + MQC.MQOO_FAIL_IF_QUIESCING);
                queueMessage = new MQMessage();
                queueMessage.Format = MQC.MQFMT_STRING;
                queueGetMessageOptions = new MQGetMessageOptions();
                queue.Get(queueMessage, queueGetMessageOptions);
                strReturn = queueMessage.ReadString(queueMessage.MessageLength);
            }
            catch (MQException exp)
            {
                strReturn = "Exception: " + exp.Message;
            }

            string path1 = @"C:\documents\Example.txt";
            System.IO.File.WriteAllText(path1, strReturn);

        }
    }
}

Can anyone tell me what is wrong in my code? Do I need anything to add here to get message constantly from remote MQ . Please Help . Any link or clue will do fine .

EDIT

after certain amount of time I need to restart my service to fetch data from remote mq . Can you tell me why windows service needs to restart to fetch data . Any clue? any idea ?