客户端和服务器端通信

　Socket 类中提供的TCPClient  NetWorkStream TCPListener　

客户端

TcpClient tcpClient=new TcpCLient(主机IP,端口号);
NetworkStream ns=tcp.Client.GetStream();

　　服务端

TcpListener tcpListener=new TcpListener(监听端口);
tcpListener.Start();
TcpClient tcpClient=tcpListener.AcceptTcpClient();
NetworkStream ns=tcpClient.GetStream();