The_Modzpop wrote Ok so im making a chat program and cant seem to get the text to come out right this is what happens when I text to myself

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how do I make it so it does not say the system window thing?

heres what I have

namespace Client_Chat
{
    public partial class Form1 : Form
    {
        Socket sck;
        EndPoint epLocal, epRemote;
        public Form1()
        {
            InitializeComponent();

            sck = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            sck.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);

            textLocalIp.Text = GetLocalIP();
            textFriendsIp.Text = GetLocalIP();
        }

        private string GetLocalIP()
        {
            IPHostEntry host;
            host = Dns.GetHostEntry(Dns.GetHostName());

            foreach (IPAddress ip in host.AddressList)
            {
                if (ip.AddressFamily == AddressFamily.InterNetwork)
                {
                    return ip.ToString();
                }
            }

            return "192.168.1.7";
        }

        private void MessageCallBack(IAsyncResult aResult)
        {
            try
            {
                int size = sck.EndReceiveFrom(aResult, ref epRemote);
                if (size > 0)
                {
                    byte[] receivedData = new byte[1464];

                    receivedData = (byte[])aResult.AsyncState;

                    ASCIIEncoding eEncoding = new ASCIIEncoding();
                    string receivedMessage = eEncoding.GetString(receivedData);

                    listBox1.Items.Add("Client 2: "+receivedMessage);
                }

                byte[] buffer = new byte[1500];
                sck.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref epRemote, new AsyncCallback(MessageCallBack), buffer);


            }
            catch (Exception exp)
            {
                MessageBox.Show(exp.ToString());
            }

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            MessageBox.Show("Welcome To Client Chat Express!");
            MessageBox.Show("Have A Great Experence Talking To Your Friends And Famley Or Coworkers!");
        }

        private void groupBox1_Enter(object sender, EventArgs e)
        {

        }

        private void tabPage1_Click(object sender, EventArgs e)
        {

        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void textFriendsIp_TextChanged(object sender, EventArgs e)
        {

        }

        private void button3_Click(object sender, EventArgs e)
        {
            try
            {
                epLocal = new IPEndPoint(IPAddress.Parse(textLocalIp.Text), Convert.ToInt32(textLocalPort.Text));
                sck.Bind(epLocal);

                epRemote = new IPEndPoint(IPAddress.Parse(textFriendsIp.Text), Convert.ToInt32(textFriendsPort.Text));
                sck.Connect(epRemote);

                byte[] buffer = new byte[1500];
                sck.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref epRemote, new AsyncCallback(MessageCallBack), buffer);

                button4.Text = "Send Message";
                button4.Enabled = false;
                button4.Enabled = true;
                textsendmessage.Focus();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            MessageBox.Show("You Are Connected To Client Chat!");
        }

        private void button4_Click(object sender, EventArgs e)
        {
            try
            {
                System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
                byte[] msg = new byte[1500];
                msg = enc.GetBytes(textsendmessage.Text);

                sck.Send(msg);

                listBox1.Items.Add("You:" +textsendmessage);
                textsendmessage.Clear();

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }

the tool works but it just bothers me that I cant fix the text. thanks in advance.
also ik my code is not neat but im still a bit new so bare with me.