C# 自动关机功能的实现

#region 自动关机方法1

        [DllImport("user32.dll", EntryPoint = "ExitWindowsEx", CharSet = CharSet.Ansi)]

        private static extern int ExitWindowsEx(int uFlags, int dwReserved); 

        public static void M_AutoClose() 

        {

            System.Diagnostics.Process process = new System.Diagnostics.Process();

            process.StartInfo.FileName = "cmd.exe";///获取或设置要启动的应用程序或文档

            //process.StartInfo.Arguments = "shutdown /s /t 60";

            process.StartInfo.UseShellExecute = false;///是否使用操作系统的外壳程序启动进程

            process.StartInfo.RedirectStandardInput = true;///应用程序的出入是否从System.Diagnostics.Process.StartInfo.RedirectStandardInput流中读取

            process.StartInfo.RedirectStandardOutput = true;///是否将应用程序的输出写入System.Diagnostics.Process.StartInfo.RedirectStandardOutput流中

            process.StartInfo.RedirectStandardError = true;///是否将应用程序的错误写入System.Diagnostics.Process.StartInfo.RedirectStandardError流中

            process.StartInfo.CreateNoWindow = true;///是否在新窗口中启动该进程的值

            process.Start();///启动(或重用)System.Diagnostics.Process组件的 System.Diagnostics.Process.StartInfo属性指定的进程资源，并将其与该组件关联

            process.StandardInput.WriteLine(@"shutdown /s /t 60");

            process.WaitForExit();

            process.Close();

        }

        #endregion

        #region 自动关机方法2

        [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);

        }

        #endregion

方法2没看明白 ，不懂什么意思 不过把我的机器给关了 这充分证明了他的功能是正确地