FileTime2DateTime(StackOverflow)

        public static DateTime FileTime2Date(System.Runtime.InteropServices.ComTypes.FILETIME time)

        {

            ulong high = (ulong)time.dwHighDateTime;

            DateTime dt;

            unchecked

            {

                int low = time.dwLowDateTime;

                uint uLow = (uint)low;

                high = high << 32;

                dt = DateTime.FromFileTime((long)(high | (ulong)uLow));

            }

            return dt;

            //long highBits = time.dwHighDateTime;     

            //highBits = highBits << 32;     

            //return DateTime.FromFileTimeUtc(highBits + (long) (uint) time.dwLowDateTime); 

            //return DateTime.FromFileTimeUtc(highBits | (long) (uint) time.dwLowDateTime); 

            //return DateTime.FromFileTimeUtc(highBits + ((long)low & 0xFFFFFFFF))

            //return DateTime.FromFileTimeUtc(highBits | ((long)low & 0xFFFFFFFF))

        }