获取下指定进程监听的TCP/UDP端口号代码,CSharp代码库,德仔网

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【CSharp】获取下指定进程监听的TCP/UDP端口号

作者:niuniu / 发布于2014/8/10/ 1618

在Windows下用CMD netstat命令可以获得当前进程监听端口号的信息，如netstat -ano可以看到IP、port、状态和监听的PID。那么可以执行CMD这个进程得到监听的端口号信息，


	//进程id
	
	 int pid = ProcInfo.ProcessID;
	
	
	
	 //存放进程使用的端口号链表
	
	 List<int> ports = new List<int>();
	
	
	
	 Process pro = new Process();
	
	 pro.StartInfo.FileName = "cmd.exe";
	
	 pro.StartInfo.UseShellExecute = false;
	
	 pro.StartInfo.RedirectStandardInput = true;
	
	 pro.StartInfo.RedirectStandardOutput = true;
	
	 pro.StartInfo.RedirectStandardError = true;
	
	 pro.StartInfo.CreateNoWindow = true;
	
	 pro.Start();
	
	 pro.StandardInput.WriteLine("netstat -ano");
	
	 pro.StandardInput.WriteLine("exit");
	
	 Regex reg = new Regex("\\s+", RegexOptions.Compiled);
	
	 string line = null;
	
	 ports.Clear();
	
	 while ((line = pro.StandardOutput.ReadLine()) != null)
	
	 {
	
	 line = line.Trim();
	
	 if (line.StartsWith("TCP", StringComparison.OrdinalIgnoreCase))
	
	 {
	
	 line = reg.Replace(line, ",");
	
	 string[] arr = line.Split(',');
	
	 if (arr[4] == pid.ToString())
	
	 {
	
	 string soc = arr[1];
	
	 int pos = soc.LastIndexOf(':');
	
	 int pot = int.Parse(soc.Substring(pos + 1));
	
	 ports.Add(pot);
	
	 }
	
	 }
	
	 else if (line.StartsWith("UDP", StringComparison.OrdinalIgnoreCase))
	
	 {
	
	 line = reg.Replace(line, ",");
	
	 string[] arr = line.Split(',');
	
	 if (arr[3] == pid.ToString())
	
	 {
	
	 string soc = arr[1];
	
	 int pos = soc.LastIndexOf(':');
	
	 int pot = int.Parse(soc.Substring(pos + 1));
	
	 ports.Add(pot);
	
	 }
	
	 }
	
	 }
	
	 pro.Close();

试试其它关键字

　进程监听　　 TCP/UDP　　端口号　

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