[StructLayout(LayoutKind.Sequential)]        public struct SYSTEMTIME        {            public ushort wYear;            public ushort wMonth;            public ushort wDayOfWeek;            public ushort wDay;            public ushort wHour;            public ushort wMinute;            public ushort wSecond;            public ushort wMilliseconds;        }        [DllImport("coredll.dll")]        private static extern bool SetLocalTime(ref SYSTEMTIME lpSystemTime);        [DllImport("coredll.dll")]        private static extern bool GetLocalTime(ref SYSTEMTIME lpSystemTime);                 SYSTEMTIME lpTime =  new SYSTEMTIME ();             lpTime.wYear =  Convert.ToUInt16(N.Text);             lpTime.wMonth = Convert.ToUInt16(Y.Text);             lpTime.wDay = Convert.ToUInt16(R.Text);             lpTime.wHour = Convert.ToUInt16(S.Text);             lpTime.wMinute = Convert.ToUInt16(F.Text);             lpTime.wSecond = Convert.ToUInt16(M.Text);            SetLocalTime(ref lpTime);