При запуске метода с параметром делегатом в отдельном потоке виснет все приложение - C#

public partial class MainWindow : Window
    {
        public delegate void ServerStart(Server.Send t);
 
        public MainWindow()
        {
            Server test = new Server();                    
            Thread t = new Thread(test.Start);
            t.Start();
        }
 
        public void WriteMessage(string msg)
        {
            ChatBox.Items.Add(msg);
        }
 
        private void Send_Click(object sender, RoutedEventArgs e)
        {
            Server test = new Server();
            ServerStart start_delegate = new ServerStart(test.Start);
            IAsyncResult result = start_delegate.BeginInvoke(WriteMessage, null, null);
            start_delegate.EndInvoke(result);
            InitializeComponent();            
        }
    }
namespace Chat
{
    public class Server
    {
        public delegate void Send(string msg);
 
        public void Start(Send test)
        {
            TcpListener listen = null;
            try
            {
                int port = 4000;
                IPAddress iaddress = IPAddress.Parse("127.0.0.1");
                listen = new TcpListener(iaddress, port);
                listen.Start();
 
                byte[] bytes = new byte[256];
                string data = null;
 
                while (true)
                {
                    TcpClient client = listen.AcceptTcpClient();
                    NetworkStream stream = client.GetStream();
                    int i;
                    while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
                    {
                        data = Encoding.Unicode.GetString(bytes, 0, i);
                        test(data);
                        data = data.ToUpper();
                        byte[] msg = Encoding.Unicode.GetBytes(data);
                        stream.Write(msg, 0, msg.Length);
                    }
                    client.Close();
                }
            }
            catch
            {
 
            }
            finally
            {
                listen.Stop();
            }
        }
 
        public void Start()
        {
            TcpListener listen = null;
            try
            {
                int port = 4000;
                IPAddress iaddress = IPAddress.Parse("127.0.0.1");
                listen = new TcpListener(iaddress, port);
                listen.Start();
 
                byte[] bytes = new byte[256];
                string data = null;
 
                while (true)
                {
                    TcpClient client = listen.AcceptTcpClient();
                    NetworkStream stream = client.GetStream();
                    int i;
                    while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
                    {
                        data = Encoding.Unicode.GetString(bytes, 0, i);
                        //test(data);
                        data = data.ToUpper();
                        byte[] msg = Encoding.Unicode.GetBytes(data);
                        stream.Write(msg, 0, msg.Length);
                    }
                    client.Close();
                }
            }
            catch
            {
 
            }
            finally
            {
                listen.Stop();
            }
        }
    }
}