CalculateUtcOffset()

static TimeSpan System.TimeZone.CalculateUtcOffset ( DateTime time, DaylightTime daylightTimes )

inlinestaticpackage

Definition at line 104 of file TimeZone.cs.

    {
        if (daylightTimes == null)
        {
            return TimeSpan.Zero;
        }
        DateTimeKind kind = time.Kind;
        if (kind == DateTimeKind.Utc)
        {
            return TimeSpan.Zero;
        }
        DateTime dateTime = daylightTimes.Start + daylightTimes.Delta;
        DateTime end = daylightTimes.End;
        DateTime dateTime2;
        DateTime dateTime3;
        if (daylightTimes.Delta.Ticks > 0)
        {
            dateTime2 = end - daylightTimes.Delta;
            dateTime3 = end;
        }
        else
        {
            dateTime2 = dateTime;
            dateTime3 = dateTime - daylightTimes.Delta;
        }
        bool flag = false;
        if (dateTime > end)
        {
            if (time >= dateTime || time < end)
            {
                flag = true;
            }
        }
        else if (time >= dateTime && time < end)
        {
            flag = true;
        }
        if (flag && time >= dateTime2 && time < dateTime3)
        {
            flag = time.IsAmbiguousDaylightSavingTime();
        }
        if (flag)
        {
            return daylightTimes.Delta;
        }
        return TimeSpan.Zero;
    }

References System.Globalization.DaylightTime.Delta, System.Globalization.DaylightTime.End, System.DateTime.IsAmbiguousDaylightSavingTime(), System.DateTime.Kind, System.TimeSpan.Ticks, and System.TimeSpan.Zero.

Referenced by System.CurrentSystemTimeZone.GetUtcOffset(), and System.TimeZone.IsDaylightSavingTime().