Camfight.Form1.ConnectToServer C# (CSharp) Method

        private void ConnectToServer()
        {
            try
            {
                IPAddress serverip = IPAddress.Parse("140.112.18.203");
                IPEndPoint serverhost = new IPEndPoint(serverip, 800);
                _tcpl = new TcpClient();
                _tcpl.Connect(serverhost);
                nets = _tcpl.GetStream();

                packet mypacket = new packet("l",username,password,0,0,0,false);

                IFormatter formatter = new BinaryFormatter();
                formatter.Serialize(nets,mypacket);

                listenthr = new Thread(new ThreadStart(listenThread));
                listenthr.Start();

            }
            catch
            {
                MessageBox.Show("連線錯誤");
                quit();
            }
        }