net cf重启和关闭系统

[DllImport("Aygshell.dll")]
        static extern bool ExitWindowsEx(uint uFlags, int dwReserved);
        private const uint EWX_REBOOT = 2;
        private const uint EWX_POWEROFF = 8;

        ///重启操作系统 
        public static void ResetWindows()
        {
            ExitWindowsEx(EWX_REBOOT, 0);
        }

        ///关闭操作系统 
        public static void ShutDownWindows()
        {
            ExitWindowsEx(EWX_POWEROFF, 0);
        }