Question

求c#中socket的语法，有注释，先谢了，飘过着也谢了

Answer 1

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

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

namespace test4_2
{
public partial class Form1 : Form
{
Socket connectSocket;
//Socket client;
byte[] bytes = new byte[1024];
delegate void listboxDel(string s);
listboxDel listboxdel;
public Form1()
{
InitializeComponent();
textBoxContent.Focus();
listboxdel = new listboxDel(listbox);
//为连接指派线程
Thread threadConnect = new Thread(new ThreadStart(Connect));
threadConnect.Start();

}
public void listbox(string str)
{
listBox1.Items.Add(str);
listBox1.SelectedIndex = listBox1.Items.Count - 1;
listBox1.ClearSelected();
}

//连接方法
public void Connect()
{

try
{

//建立连接socket
connectSocket = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);

//开始异步连接
connectSocket.BeginConnect(IPAddress.Parse("172.16.94.152"),
82,
new AsyncCallback(ConnectCallback), //定义回调函数代理
connectSocket); //传递给回调函数的状态
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}

//连接方法的回调函数
private void ConnectCallback(IAsyncResult ar)
{
try
{
//从传递的状态中获取套接字，创建一个客户端套接字
Socket client = (Socket)ar.AsyncState;

//完成挂起的连接操作
client.EndConnect(ar);
listBox1.Invoke(listboxdel, "连接服务器成功，可以开始通话!");
client.BeginReceive(bytes, 0, 1000, 0, new AsyncCallback(receivecallback), client);
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
public void receivecallback(IAsyncResult ar)
{
try
{
Socket client = (Socket)ar.AsyncState;
int length = client.EndReceive(ar);
listBox1.Invoke(listboxdel, Encoding.UTF8.GetString(bytes, 0, length));
client.BeginReceive(bytes, 0, 1000, 0, new AsyncCallback(receivecallback), client);
}
catch
{
}

}
//发送方法
private void Send(String data)
{
//使用ASCII转换字符串为字节序列
byte[] byteData = Encoding.UTF8.GetBytes(data); //将字符串转换成字节序列

//开始向远端设备发送数据
connectSocket.BeginSend(byteData, 0, byteData.Length, SocketFlags.None,
new AsyncCallback(SendCallback), connectSocket);
}

//发送方法的回调函数
private void SendCallback(IAsyncResult ar)
{
try
{
//从传递的状态中获取套接字，创建一个客户端套接字
Socket client = (Socket)ar.AsyncState;

//结束异步数据传输操作，返回传输的字节数
int bytesSent = client.EndSend(ar);
listBox1.Invoke(listboxdel, textBoxUser.Text +":"+ textBoxContent.Text);

}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}

private void buttonSend_Click(object sender, EventArgs e)
{

Send(textBoxUser.Text+":"+textBoxContent.Text);

}
}
}