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