IsDaylightSavingTime() [3/4]

bool System.TimeZoneInfo.IsDaylightSavingTime ( DateTime dateTime, TimeZoneInfoOptions flags, CachedData cachedData )

inlineprivate

Definition at line 1181 of file TimeZoneInfo.cs.

    {
        if (!_supportsDaylightSavingTime || _adjustmentRules == null)
        {
            return false;
        }
        DateTime dateTime2;
        if (dateTime.Kind == DateTimeKind.Local)
        {
            dateTime2 = ConvertTime(dateTime, cachedData.Local, this, flags, cachedData);
        }
        else
        {
            if (dateTime.Kind == DateTimeKind.Utc)
            {
                if (cachedData.GetCorrespondingKind(this) == DateTimeKind.Utc)
                {
                    return false;
                }
                GetUtcOffsetFromUtc(dateTime, this, out var isDaylightSavings);
                return isDaylightSavings;
            }
            dateTime2 = dateTime;
        }
        int? ruleIndex;
        AdjustmentRule adjustmentRuleForTime = GetAdjustmentRuleForTime(dateTime2, out ruleIndex);
        if (adjustmentRuleForTime != null && adjustmentRuleForTime.HasDaylightSaving)
        {
            DaylightTimeStruct daylightTime = GetDaylightTime(dateTime2.Year, adjustmentRuleForTime, ruleIndex);
            return GetIsDaylightSavings(dateTime2, adjustmentRuleForTime, daylightTime);
        }
        return false;
    }

References System.TimeZoneInfo._adjustmentRules, System.TimeZoneInfo._supportsDaylightSavingTime, System.TimeZoneInfo.ConvertTime(), System.Runtime.Serialization.Dictionary, System.TimeZoneInfo.GetAdjustmentRuleForTime(), System.TimeZoneInfo.GetDaylightTime(), System.TimeZoneInfo.GetIsDaylightSavings(), and System.TimeZoneInfo.GetUtcOffsetFromUtc().