C#获取本地应用进程和端口号的实现示例

List<SearchedProcessInfo> searchResult=new List<SearchedProcessInfo>();
    Process pro = null;

    try
    {
        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(String.IsNullOrWhiteSpace(txtPPort.Text)?"netstat -ano":String.Format("netstat -ano | findstr :{0}", txtPPort.Text));
        pro.StandardInput.WriteLine("exit");
        Regex reg = new Regex("\\s+", RegexOptions.Compiled);
        string line = null;
        while ((line = pro.StandardOutput.ReadLine()) != null)
        {
            line = line.Trim();

            if (!line.StartsWith("TCP") && !line.StartsWith("UDP"))
            {
                continue;
            }
            Console.WriteLine(line);

            line = line.Trim();
            SearchedProcessInfo info = new SearchedProcessInfo();
            line = reg.Replace(line, ",");
            string[] arr = line.Split(',');
            string soc = arr[1];
            int pos = soc.LastIndexOf(':');
            info.UsePort = soc.Substring(pos + 1);
            info.Protocol = arr[0];

            if (line.StartsWith("TCP"))
            {
                info.ProcessID = Convert.ToInt32(arr[4]);
                info.Status = arr[3];
            }
            else
            {
                info.ProcessID = Convert.ToInt32(arr[3]);
            }
            try
            {
                Process pTmp = Process.GetProcessById(Convert.ToInt32(info.ProcessID));
                info.ProcessName = pTmp != null ? pTmp.ProcessName : String.Empty;
            }
            catch(Exception exx)
            {
                info.ProcessName = String.Empty;
            }            
            
            searchResult.Add(info);
        }
        ...

    }
    catch (Exception exp)
    {
        MessageBox.Show(exp.Message);
    }
    finally
    {
        if(pro != null)
        {
            pro.Close();
        }
    }