你应该知道的.net平台下socket异步通讯（代码实例）1，首先添加两个windows窗体项目，一个作为服务端server，一个作为客户端Client
2，然后添加服务端代码，添加命名空间，界面上添加TextBox控件
using System.Net;using System.Net.Sockets;
3，FormLoad方法添加代码
PRivate void Form1_Load(object sender, EventArgs e) { ipEndPoint epServer = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 7878);//IP地址和端口号 Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//定义socket socket.Bind(epServer);//绑定 socket.Listen(10);//监听 socket.BeginAccept(new AsyncCallback(RecVing), socket);//异步接收，回调方法为RecVing }
4，添加回调方法代码
private void RecVing(IAsyncResult rec_socket) { string cmdstr = ""; Socket sc = (Socket)rec_socket.AsyncState; Socket socket = sc.EndAccept(rec_socket); byte[] bytes = new byte[1024]; int i = socket.Receive(bytes); cmdstr = Encoding.UTF8.GetString(bytes, 0, i); showstrs(cmdstr); sc.BeginAccept(new AsyncCallback(RecVing), sc); }
5，添加showstrs方法，
定义委托private delegate void shixudong_invoke(string invokefun);
private void showstrs(string recv_strs) { if (recv_strs.Length != 0) { if (this.InvokeRequired) { shixudong_invoke invoke = new shixudong_invoke(showstrs); this.Invoke(invoke, (object)recv_strs); } else { textBox1.Text = recv_strs; } } }
6，到此为止，服务端已经添加完毕
7，客户端代码，首先跟服务端一样，添加命名空间，在界面上添加button事件
private void button1_Click(object sender, EventArgs e) { IPEndPoint IPEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 7878);//IP，端口号 Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); socket.BeginConnect(IPEndPoint, new AsyncCallback(Sending), socket);//回调方法Sending }
8，添加回调方法，代码如下
private void Sending(IAsyncResult rec_socket) { Socket socket = (Socket)rec_socket.AsyncState; try { if (socket.Connected) { byte[] msgBuff = Encoding.UTF8.GetBytes(textBox1.Text); socket.Send(msgBuff); //socket.Accept(); } else { Console.WriteLine("Error!", "Error!"); } } catch { Console.WriteLine("Error!", "Error!"); } }
9，到此为止，客户端代码已经完成，调试的时候先启动服务端，然后启动客户端
10，运行截图如下，点击按钮前，在文本框中输入shixudong
11，点击按钮之后截图如下
测试成功，有问题的可以联系我shixudong3@yeah.net,希望能多大家有所帮助！