C# C/S 异步通信问题

一下代码在Winform中运行正常，但是在console中，执行到DoBeginAcceptTcpClient的  listener.BeginAcceptTcpClient(new AsyncCallback(this.DoAcceptTcpClientCallback), listener);后系统就运行结束了，请问是什么原因

    public void Start()

        {

            Thread t = new Thread(new ThreadStart(this.BeginListen));

            t.Start();

        }



        private void BeginListen()

        {

            try

            {

                IPAddress ip = IPAddress.Parse("127.0.0.1");

                TcpListener listener = new TcpListener(ip, Settings.Default.Port);

                listener.Start();

                Console.WriteLine("=====Socket文件服务开启=====");



                DoBeginAcceptTcpClient(listener);





            }

            catch (Exception ex)

            {

                Console.WriteLine("文件服务开启失败原因为:");

                Console.WriteLine(ex.Message);

            }

        }



        /// <summary>

        /// begin a new connection by asynchronous

        /// </summary>

        /// <param name="listener"></param>

        private void DoBeginAcceptTcpClient(TcpListener listener)

        {

            listener.BeginAcceptTcpClient(new AsyncCallback(this.DoAcceptTcpClientCallback), listener);

        }

        }





        private void DoAcceptTcpClientCallback(IAsyncResult ar)

        {



            try

            {

                TcpListener listener = ar.AsyncState as TcpListener;

                TcpClient tcpClient =&n