{
   try
      {
	tlTcpListen = new TcpListener ( port )  ;
	//以8000端口號來初始化TcpListener實(shí)例
	tlTcpListen.Start ( )  ;
	//開始監(jiān)聽網(wǎng)絡(luò)的連接請求
	statusBar1.Text = "正在監(jiān)聽..."  ;
	stRead = tlTcpListen.AcceptSocket ( ) ;
	//通過連接請求，并獲得接收數(shù)據(jù)時(shí)使用的Socket實(shí)例
	EndPoint tempRemoteEP = stRead.RemoteEndPoint  ;
	IPEndPoint tempRemoteIP =  ( IPEndPoint ) tempRemoteEP ;
	//獲取請求的遠(yuǎn)程計(jì)算機(jī)名稱
	IPHostEntry host = Dns.GetHostByAddress
         ( tempRemoteIP.Address ) ;
	string sHostName = host.HostName ;
	statusBar1.Text = "已經(jīng)連接！" ;
	//循環(huán)偵聽
	while (  blistener  )
	   {
	     string sTime = DateTime.Now.ToShortTimeString  ( )  ;
		//獲取接收數(shù)據(jù)時(shí)的時(shí)間
		Byte [ ] byRead =new Byte [ 80 ] ;
		int iRead = stRead.ReceiveFrom 
                  ( byRead , ref tempRemoteEP ) ;
		//獲得接收的字節(jié)數(shù)目
		Byte [ ] byText = new Byte [ iRead ] ;
		//并根據(jù)接收到的字節(jié)數(shù)目來定義字節(jié)數(shù)組
		Array.Copy  ( byRead , 0 , byText , 0 , iRead ) ;
		string sTemp = System.Text.Encoding.Default.
                   GetString ( byText ) ;
		//判斷是否為斷開連接控制碼
		if  (  sTemp.Trim ( )  == "STOP"  )
		{
			stRead.Close ( ) ;
			tlTcpListen.Stop  (  )  ;
			 //關(guān)閉偵聽
			statusBar1.Text = "連接已經(jīng)關(guān)閉！"  ;
			thThreadRead.Abort  (   )  ;
			//中止線程
			return ;
		}
		else
		listBox1.Items.Add  (  sTime + " " + sTemp  )  ;
		
	}	catch  (  System.Security.SecurityException  ) 
	{
	MessageBox.Show  (  "偵聽失??！"  , "錯誤"  )  ;
	}
}

private void button1_Click ( object sender , System.EventArgs e )
{
thThreadRead = new Thread ( new ThreadStart ( Listen ) ) ;
//以Listen過程來初始化Thread實(shí)例
thThreadRead.Start (   ) ;
//啟動線程
button1.Enabled = false  ;
}