RECIEVING SMS THROUGH LISTENING PORT IN SMARTPHONE 6 APPLICATION

Question

Hai .....sir/mam! ...Sorry to my English

Present i am doing a windows mobile 6.o application,my problem is ...i completed successfully sending sms,but i can't do receiving sms through   listening port  (receive sms could not go to inbox),and where it will apply that code(syntax), 

How can i listen and create port?

How can i receive the message?

please send me developed code in c#.net.

This My listening code:please correct my code

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Net.Sockets;

using System.IO.Ports;

using System.IO;

using System.Net;

namespace DeviceApplication2

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

            

            

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            int port = 123456;

            int backlog = 3;

            // create the socket

            Socket listenSocket = new Socket(AddressFamily.InterNetwork,

                                             SocketType.Stream,

                                             ProtocolType.Tcp);

            // bind the listening socket to the port

            // IPAddress hostIP = (Dns.Resolve(IPAddress.Any.ToString())).AddressList[0];

            IPAddress hostIP = Dns.GetHostEntry(IPAddress.Any.ToString()).AddressList[0];

            IPEndPoint ep = new IPEndPoint(hostIP, port);

            listenSocket.Bind(ep);

            // start listening

            MessageBox.Show("start the listening");

            listenSocket.Listen(backlog);

            MessageBox.Show("after listening");

            

            

        }

    }

}

I am new one to this.once again sorry to my English,any  please help me any one.