C# Net.Sockets 使用TcpListener发送接收数据

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using System;
using System.Net;
using System.Net.Sockets;

namespace TY.Net
{
    /// <summary>
    /// 封装有关创建到 Internet 的 TCP 和 UDP 连接的详细信息。
    /// </summary>
    public class SocketsT
    {
        /// <summary>
        /// 委托收到信息时执行的委托
        /// </summary>
        /// <param name="mes"></param>
        public delegate void ShowMessage(string mes);
        /// <summary>
        /// 事件收到信息时执行的事件
        /// </summary>
        public event ShowMessage ShowMes;

        /// <summary>
        /// TCP侦听端口
        /// </summary>
        /// <param name="port">端口</param>
        /// <param name="serverIP">目标IP</param>
        public void tcpGetString(string serverIP, int port)
        {
            TcpListener server = null;

            try
            {
                // Set the TcpListener on port 13000.
                IPAddress localAddr = IPAddress.Parse(serverIP);

// TcpListener server = new TcpListener(port);
server = new TcpListener(localAddr, port);

// Start listening for client requests.
server.Start();

                // Buffer for reading data
                Byte[] bytes = new Byte[256];
                String data = null;

                // Enter the listening loop.
                while (true)
                {
                    // Perform a blocking call to accept requests.
                    // You could also user server.AcceptSocket() here.
                    TcpClient client = server.AcceptTcpClient();
                    data = null;

// Get a stream object for reading and writing
NetworkStream stream = client.GetStream();

int i;

                    // Loop to receive all the data sent by the client.
                    while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
                    {
                        // Translate data bytes to a ASCII string.
                        data = System.Text.Encoding.UTF8.GetString(bytes, 0, i);
                        showMess(data);
                    }

                    // Shutdown and end connection
                    client.Close();
                }

            }
            catch (SocketException e)
            {
                showMess(string.Format("SocketException: {0}", e));
            }
            finally
            {
                // Stop listening for new clients.
                server.Stop();
            }
        }

        /// <summary>
        /// 请重写ShowMes事件详细看说明
        /// </summary>
        /// <param name="data">接收到的信息或错误信息</param>
        private void showMess(String data)
        {
            if (ShowMes != null)
            {
                ShowMes(data);
            }
        }

        /// <summary>
        /// 发送连接
        /// 支持中文
        /// </summary>
        /// <param name="serverIP">目标IP</param>
        /// <param name="message">发送信息</param>
        /// <param name="port">目标端口</param>
        public static void tcpSendText(String serverIP, String message, int port)
        {
            TcpClient client = new TcpClient(serverIP, port);

// Translate the passed message into ASCII and store it as a Byte array.
Byte[] data = System.Text.Encoding.UTF8.GetBytes(message);

// Get a client stream for reading and writing.
// Stream stream = client.GetStream();

NetworkStream stream = client.GetStream();

            // Send the message to the connected TcpServer.
            stream.Write(data, 0, data.Length);
            stream.Close();
            client.Close();
         }
    }
}
// 使用的端口,请开启防火墙

// 并注意在窗体的线程处理

// 命令行下则不用