代码分2块，server端：

复制代码 代码如下:

class Program

{

static void Main(string[] args)

{

TcpListener lsner = new TcpListener(9000);

lsner.Start();

Console.WriteLine("started in port: 9000");

while (true)

{

TcpClient client=lsner.AcceptTcpClient();

Console.WriteLine("new client received. hashcode: {0}", client.GetHashCode());

ThreadPool.QueueUserWorkItem(new WaitCallback(ProcessTcpClient), client);

}

Console.ReadKey();

}

private static void ProcessTcpClient(object state)

{

TcpClient client=state as TcpClient;

if(client==null)

Console.WriteLine("client is null");

NetworkStream ns=client.GetStream();

StreamWriter sw = new StreamWriter(ns);

sw.WriteLine("Welcome.");

sw.Flush();

sw.Close();

client.Close();

}

client端：

复制代码 代码如下:

class Program

{

static void Main(string[] args)

{

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

IPEndPoint ep=new IPEndPoint(address, 9000);

TcpClient client = new TcpClient();

client.Connect(ep);

NetworkStream ns=client.GetStream();

StreamReader sr = new StreamReader(ns);

Console.WriteLine(sr.ReadToEnd());

sr.Close();

sr.Dispose();

ns.Close();

ns.Dispose();

client.Close();

Console.ReadKey();

}

}