聊天代码问题

我的这个问题一直找不出是什么原因，所以来...，程序运行时没有弹出错误，但是一运行按钮连接，和启动服务器后就窗口死机，
客户端代码：public partial class Form1 : Form
    {           
           TcpListener tcplisten;
            Socket so;
            NetworkStream netw;
            StreamReader str;
            StreamWriter stw;
        public Form1()
        {            InitializeComponent();
        }
       //连接按钮
        private void button1_Click(object sender, EventArgs e)
        {
            so = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
            so.Connect(IPAddress.Parse(textBox1.Text),34567);
            if (so.Connected)
            {
                netw = new NetworkStream(so);
                str = new StreamReader(netw);
                stw = new StreamWriter(netw);
                
                while(so.Connected)
                {
                    try
                    {   string tem = str.ReadLine();
                        if (tem.Length != 0)
                        {
                            listBox1.Items.Add("他说：" + tem);
                        }
                    }
                    catch
                    {                     }
                                    }
           
            }
            else
            {
                MessageBox.Show("服务器没有开启");
            }
        }
       //断开连接
        private void button2_Click(object sender, EventArgs e)
        {
            so.Close();
        }
       //发送信息
        private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
        {
            if(e.KeyChar == (char)13)
            {
                if (so.Connected)
                {
                    try
                    {
                        listBox1.Items.Add("我说:" + textBox1.Text);
                        stw.WriteLine(textBox1.Text);
                        stw.Flush();
                        textBox1.Text = "";
                    }
                    catch
                    { 
                    
                    }
                }
                else
                {
                    MessageBox.Show("没有连接");
                }
            }
        }
    }
服务端代码：
public partial class Form1 : Form
    {
        TcpListener tcplisten;
        Socket so;
        NetworkStream netw;
        StreamReader str;
        StreamWriter stw;
        IPEndPoint ipp;
        Socket ru;
        public Form1()
        {
            InitializeComponent();
        }
        //启动服务器代码
        private void button1_Click(object sender, EventArgs e)
        {
            ipp = new IPEndPoint(IPAddress.Any,34567);
            so = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
            so.Bind(ipp);
            so.Listen(0);
            ru = so.Accept();
            netw = new NetworkStream(ru);
            str = new StreamReader(netw);
            stw = new StreamWriter(netw);
            while(ru.Connected)
            {
                try
                {
                    string tem = str.ReadLine();
                    if (tem.Length != 0)
                    {
                        listBox1.Items.Add("他说：" + tem);
                    }
                }
                catch 
                {
                
                }
                
            }
      
                    }
       //断开服务器代码
        private void button2_Click(object sender, EventArgs e)
        {
            so.Close();
          
        }
      //服务器回复信息代码
        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            if(e.KeyChar == (char)13)
            {
                if (ru.Connected)
                {
                    try
                    {
                        listBox1.Items.Add("我说:" + textBox1.Text);
                        textBox1.Text = "";
                        stw.WriteLine(textBox1.Text);
                        stw.Flush();
                    }
                    catch
                    {                    }
                }
                else
                {
                    MessageBox.Show("没有建立连接");
                }
            }
        }
    }