VisualC#中托管Socket的实现方法(二)

     
     private void InitializeComponent ( )
{
	this.button1 = new System.Windows.Forms.Button ( ) ;
	this.listBox1 = new System.Windows.Forms.ListBox ( ) ;
	this.statusBar1 = new System.Windows.Forms.StatusBar ( ) ;
	this.SuspendLayout ( ) ;
	this.button1.FlatStyle = System.Windows.Forms.FlatStyle.Flat ;
	this.button1.Location = new System.Drawing.Point ( 96 , 16 ) ;
	this.button1.Name = "button1" ;
	this.button1.Size = new System.Drawing.Size ( 80 , 34 ) ;
	this.button1.TabIndex = 0 ;
	this.button1.Text = "监听" ;
	this.button1.Click += new System.EventHandler ( this.button1_Click ) ;
	this.listBox1.ItemHeight = 12 ;
	this.listBox1.Location = new System.Drawing.Point ( 16 , 68 ) ;
	this.listBox1.Name = "listBox1" ;
	this.listBox1.Size = new System.Drawing.Size ( 258 , 172 ) ;
	this.listBox1.TabIndex = 1 ;
	this.statusBar1.Location = new System.Drawing.Point ( 0 , 251 ) ;
	this.statusBar1.Name = "statusBar1" ;
	this.statusBar1.Size = new System.Drawing.Size ( 292 , 22 ) ;
	this.statusBar1.TabIndex = 2 ;
	this.statusBar1.Text = "无连接" ;
	this.AutoScaleBaseSize = new System.Drawing.Size ( 6 , 14 ) ;
	this.ClientSize = new System.Drawing.Size ( 292 , 273 ) ;
	this.Controls.AddRange ( new System.Windows.Forms.Control[] {
		  this.statusBar1 ,
		  this.listBox1 ,
		  this.button1} ) ;
	this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle ;
	this.MaximizeBox = false ;
	this.Name = "Form1" ;
	this.Text = "利用Socket来接收数据" ;
	this.ResumeLayout ( false ) ;
}

     
     using System ;
using System.Drawing ;
using System.Collections ;
using System.ComponentModel ;
using System.Windows.Forms ;
using System.Data ;
using System.Net.Sockets  ;
//使用到TcpListen类
using System.Net ;
using System.Threading  ;
//使用到线程

     
     int port = 8000 ;
//定义侦听端口号
private Thread thThreadRead ;
//创建线程，用以侦听端口号，接收信息
private TcpListener	tlTcpListen ;
//侦听端口号
private bool blistener = true ;
//设定标示位，判断侦听状态
private Socket stRead ;

     
     {
   try
      {
	tlTcpListen = new TcpListener ( port )  ;
	//以8000端口号来初始化TcpListener实例
	tlTcpListen.Start ( )  ;
	//开始监听网络的连接请求
	statusBar1.Text = "正在监听..."  ;
	stRead = tlTcpListen.AcceptSocket ( ) ;
	//通过连接请求，并获得接收数据时使用的Socket实例
	EndPoint tempRemoteEP = stRead.RemoteEndPoint  ;
	IPEndPoint tempRemoteIP =  ( IPEndPoint ) tempRemoteEP ;
	//获取请求的远程计算机名称
	IPHostEntry host = Dns.GetHostByAddress
         ( tempRemoteIP.Address ) ;
	string sHostName = host.HostName ;
	statusBar1.Text = "已经连接！" ;
	//循环侦听
	while (  blistener  )
	   {
	     string sTime = DateTime.Now.ToShortTimeString  ( )  ;
		//获取接收数据时的时间
		Byte [ ] byRead =new Byte [ 80 ] ;
		int iRead = stRead.ReceiveFrom 
                  ( byRead , ref tempRemoteEP ) ;
		//获得接收的字节数目
		Byte [ ] byText = new Byte [ iRead ] ;
		//并根据接收到的字节数目来定义字节数组
		Array.Copy  ( byRead , 0 , byText , 0 , iRead ) ;
		string sTemp = System.Text.Encoding.Default.
                   GetString ( byText ) ;
		//判断是否为断开连接控制码
		if  (  sTemp.Trim ( )  == "STOP"  )
		{
			stRead.Close ( ) ;
			tlTcpListen.Stop  (  )  ;
			 //关闭侦听
			statusBar1.Text = "连接已经关闭！"  ;
			thThreadRead.Abort  (   )  ;
			//中止线程
			return ;
		}
		else
		listBox1.Items.Add  (  sTime + " " + sTemp  )  ;
		
	}	catch  (  System.Security.SecurityException  ) 
	{
	MessageBox.Show  (  "侦听失败！"  , "错误"  )  ;
	}
}

     
     private void button1_Click ( object sender , System.EventArgs e )
{
thThreadRead = new Thread ( new ThreadStart ( Listen ) ) ;
//以Listen过程来初始化Thread实例
thThreadRead.Start (   ) ;
//启动线程
button1.Enabled = false  ;
}