关于Socket编程的

本人刚接触Socket编程，对C#也不熟悉编了个简单的通信系统，在自己的电脑上实现客户端到服务器端的通信。可是客户端发送是说ip地址有问题？出现system.dll类型的异常。请大家帮忙解决，谢谢！！程序代码如下//客服端，功能为点击button1时把textBox1的内容发送给服务器端private void button1_Click(object sender, EventArgs e)
        {
            try
            {                Socket Sender = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                
                Sender.Connect(IPAddress.Parse("192.168.1.105"), 0);
                string data = textBox1.Text;
                Byte[] buffer = new byte[1024];
                buffer = System.Text.Encoding.ASCII.GetBytes(data);
                Sender.Send(buffer);
                Sender.Close();
            }
            catch (SocketException e1)
            { 
                Console.WriteLine(e1.ToString());
　　　　　　　　return;            }//服务器端，功能为点击开始时绑定ip并等待连接，连接成功边把通讯内容显示在textBox1上private void button1_Click(object sender, EventArgs e)
        {
            Socket Listener = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
            IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse("192.168.1.105"),0);
            Listener.Bind(endpoint);
            Listener.Listen(5);
            
            Socket Accepter = Listener.Accept();
            IPEndPoint ClientIP = (IPEndPoint)Accepter.RemoteEndPoint;
            Console.WriteLine("Connect:"+ClientIP.Address +" At Point:"+ClientIP.Port);
            Byte[] buffer = new Byte[1024];
            int i = Accepter.Receive(buffer);
            Console.WriteLine(i);
            if (i!= 0)
            {
                string data;
                data = Encoding.UTF8.GetString(buffer, 0, i);
                textBox1.Text = data;
            }
            Accepter.Close();
            Listener.Close();
        }