关机、重起的程序代码谁能帮帮?最好是用.NET的...

using System;
using System.Collections.Generic;
using System.Text;

using Microsoft.Win32;
using System.Runtime.InteropServices;
using System.Threading;

namespace iSchoolWebBrowser
{
class EnvironmentCheckClass
{

[DllImport("user32.dll")]
static extern bool ExitWindowsEx(ExitWindows uFlags, ShutdownReason dwReason);
[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", E