C# Windows时间与UTC时间互转

//UTC时间转WINDOWS时间
        public DateTime UTCToDateTime(double l)
        {
            DateTime dtZone = new DateTime(1970, 1, 1, 0, 0, 0);

            dtZone = dtZone.AddSeconds(l);

            return dtZone.ToLocalTime();
        }

        //WINDOWS时间转UTC时间
        public double DateTimeToUTC(DateTime vDate)
        {
            TimeZone tz = TimeZone.CurrentTimeZone;

            vDate = vDate.ToUniversalTime();

            DateTime dtZone = new DateTime(1970, 1, 1, 0, 0, 0);

            return vDate.Subtract(dtZone).TotalSeconds;
        }