运用C#编写的一个定时关机程序

EWX_FORCE;
   if (ExitWindowsEx(how, 0) == 0)
    throw new PrivilegeException(FormatError(Marshal.GetLastWin32Error()));
  }
  /// <summary>
  /// Tries to enable the specified privilege.
  /// </summary>
  /// <param name="privilege">The privilege to enable.</param>
  /// <exception cref="PrivilegeException">There was an error while requesting a required privilege.</exception>
  protected static void EnableToken(string privilege ) {
   if (!CheckEntryPoint("advapi32.dll", "AdjustTokenPrivileges"))
    return;
   IntPtr tokenHandle = IntPtr.Zero;
   LUID privilegeLUID = new LUID();
   TOKEN_PRIVILEGES newPrivileges = new TOKEN_PRIVILEGES();
   TOKEN_PRIVILEGES tokenPrivileges ;
   if (OpenProcessToken(Process.GetCurrentProcess().Handle, TOKEN_ADJUST_PRIVILEGES

关键词：运用C#编写的一个定时关机程序