经调试通过的C# Win200关机代码

using System;
using System.Runtime.InteropServices;

namespace AutoExitWindows
{
 /// <summary>
 /// NewShutDown 的摘要说明。
 /// </summary>
 public class NewShutDown
 {
  [StructLayout(LayoutKind.Sequential, Pack=1)]
   internal struct TokPriv1Luid
  {
   public int Count;
   public long Luid;
   public int Attr;
  }

  [DllImport("kernel32.dll", ExactSpelling=true) ]
  internal static extern IntPtr GetCurrentProcess();

  [DllImport("advapi32.dll", ExactSpelling=true, SetLastError=true) ]
  internal static extern bool OpenProcessToken( IntPtr h, int acc, ref IntPtr phtok );

  [DllImport("advapi32.dll", SetLastError=true) ]
  internal static extern bool LookupPrivilegeValue( string host, string name, ref long pluid );

  [DllImport("advapi32.dll", ExactSpelling=true, SetLastError=true) ]
  internal static extern bool AdjustTokenPrivileges( IntPtr htok, bool disall,
   ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen );

  [DllImport("user32.dll", ExactSpelling=true, SetLastError=true) ]
  internal static extern bool ExitWindowsEx( int flg, int rea );

  internal const int SE_PRIVILEGE_ENABLED = 0x00000002;
  internal const int TOKEN_QUERY = 0x00000008;
  internal const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
  internal const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";
  internal const int EWX_LOGOFF = 0x00000000;
  internal const int EWX_SHUTDOWN = 0x00000001;
  internal const int EWX_REBOOT = 0x00000002;
  internal const int EWX_FORCE = 0x00000004;
  internal const int EWX_POWEROFF = 0x00000008;
  internal const int EWX_FORCEIFHUNG = 0x00000010;

  private static void DoExitWin(int flg)
  {
   bool ok;
   TokPriv1Luid tp;
   IntPtr hproc = GetCurrentProcess();
   IntPtr htok = IntPtr.Zero;
   ok = OpenProcessToken( hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok );
   tp.Count = 1;
   tp.Luid = 0;
   tp.Attr = SE_PRIVILEGE_ENABLED;
   ok = LookupPrivilegeValue( null, SE_SHUTDOWN_NAME, ref tp.Luid );
   ok = AdjustTokenPrivileges( htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero );
   ok = ExitWindowsEx( flg, 0 );
  }

  public NewShutDown()
  {
   //
   // TODO: 在此处添加构造函数逻辑
   //
   Console.WriteLine("正在关闭计算机……");
   // 修改 EWX_SHUTDOWN 或者 EWX_LOGOFF, EWX_REBOOT等实现不同得功能。
   // 在XP下可以看到帮助信息，以得到不同得参数
   // SHUTDOWN /?
   DoExitWin(EWX_POWEROFF);

  }
 }
}