【C#】Socket类的使用

发现一个好帖子

你得学会并且学得会的Socket编程基础知识 - 陈希章 - 博客园

客户端

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Threading.Tasks;
using System.Net;

namespace SockForm
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnSend_Click(object sender, EventArgs e)
        {
            string ip = this.txtIP.Text.Trim();
            string port = this.txtPort.Text.Trim();
            string message = this.txtMessage.Text.Trim();

            if (string.IsNullOrEmpty(ip) || string.IsNullOrEmpty(port) || string.IsNullOrEmpty(message))
            {
                MessageBox.Show("不能为空！");
                return;
            }

            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            try 
            {
                IPAddress iPAddress = IPAddress.Parse(ip);
                socket.Connect(new IPEndPoint(iPAddress, int.Parse(port)));
                string sendMessage = this.txtMessage.Text.Trim();
                socket.Send(Encoding.ASCII.GetBytes(sendMessage));
            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message);
                socket.Close();
            }
        }
    }
}

客户端窗体

服务器

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Threading.Tasks;
using System.IO;

namespace ListenerForm
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Thread thread = new Thread(new ThreadStart(MyListen));
            thread.Start();
        }

        //委托
        protected delegate void ShowContentDelegate(string content);

        private void MyListen()
        {
            Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream,ProtocolType.Tcp);

            serverSocket.Bind(new IPEndPoint(IPAddress.Parse("127.0.0.1"),19522));

            while(true)
            {
                serverSocket.Listen(0);
                Socket socket = serverSocket.Accept();
                byte[] data = new byte[1024];
                int bytes = socket.Receive(data,data.Length,0);
                ShowContentDelegate myContent = new ShowContentDelegate(ShowContent);           //绑定委托与方法
                Invoke(myContent,new object[] {Encoding.ASCII.GetString(data,0,bytes)});        
            }
        }

        public void ShowContent(string content)
        {
            this.txtReceive.Text += content + "\r\n";
        }
    }
}

 服务器窗体