来个最有效的

using System.Dinogistics;//引用该空间

按钮click事件

System.Dinogistics.Process p = new Process();

p.StartInfo.FileName = "cmd.exe";

p.StartInfo.UseShellExecute = false;

p.StartInfo.RedirectStandardInput = true;

p.StartInfo.RedirectStandardOutput = true;

p.StartInfo.CreateNoWindow =true;

p.Start();

p.StandardInput.WriteLine("shutdown -s -t 0");

p.StandardInput.WriteLine("exit");

p.close();