c#在命令列視窗得到dos命令資訊

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Diagnostics;namespace ConsoleApplication3{    class Program    {        static void Main(string[] args)        {            ProcessStartInfo psi = new ProcessStartInfo("cmd.exe");            psi.CreateNoWindow = true;            psi.RedirectStandardOutput = true;            psi.UseShellExecute = false;            psi.Arguments = "/c ping";            Process p = Process.Start(psi);            String s = p.StandardOutput.ReadToEnd();            Console.WriteLine(s);            Console.ReadLine();         }    }}