|
static private CalculateUtcOffset ( System.DateTime time, |
||
| time | System.DateTime | |
| daylightTimes | ||
| return | System.TimeSpan | |
// Token: 0x06000CF3 RID: 3315 RVA: 0x0002795C File Offset: 0x00025B5C
public override TimeSpan GetUtcOffset(DateTime time)
{
if (time.Kind == DateTimeKind.Utc)
{
return(TimeSpan.Zero);
}
return(new TimeSpan(TimeZone.CalculateUtcOffset(time, this.GetDaylightChanges(time.Year)).Ticks + this.m_ticksOffset));
}
internal long GetUtcOffsetFromUniversalTime(DateTime time)
{
// Get the daylight changes for the year of the specified time.
DaylightTime daylightTime = GetDaylightChanges(time.Year);
// This is the UTC offset for the time (which is based on Universal time), but it is calculated according to local timezone rule.
long utcOffset = TimeZone.CalculateUtcOffset(time, daylightTime).Ticks + m_ticksOffset;
long ticks = time.Ticks;
if (daylightTime.Delta.Ticks != 0)
{
// This timezone uses daylight saving rules.
if (m_ticksOffset < 0)
{
// This deals with GMT-XX timezones (e.g. Pacific Standard time).
if ((ticks >= daylightTime.Start.Ticks + daylightTime.Delta.Ticks) && (ticks < daylightTime.Start.Ticks - m_ticksOffset))
{
return(utcOffset - daylightTime.Delta.Ticks);
}
if ((ticks >= daylightTime.End.Ticks) && (ticks < daylightTime.End.Ticks - m_ticksOffset - daylightTime.Delta.Ticks))
{
return(utcOffset + daylightTime.Delta.Ticks);
}
}
else
{
// This deals with GMT+XX timezones.
if ((ticks >= daylightTime.Start.Ticks - m_ticksOffset) && (ticks < daylightTime.Start.Ticks + daylightTime.Delta.Ticks))
{
return(utcOffset + daylightTime.Delta.Ticks);
}
if ((ticks >= daylightTime.End.Ticks - m_ticksOffset - daylightTime.Delta.Ticks) && (ticks < daylightTime.End.Ticks))
{
return(utcOffset - daylightTime.Delta.Ticks);
}
}
}
return(utcOffset);
}
/// <summary>Returns a value indicating whether the specified date and time is within the specified daylight saving time period.</summary>
/// <param name="time">A date and time. </param>
/// <param name="daylightTimes">A daylight saving time period. </param>
/// <returns>
/// <see langword="true" /> if <paramref name="time" /> is in <paramref name="daylightTimes" />; otherwise, <see langword="false" />.</returns>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="daylightTimes" /> is <see langword="null" />. </exception>
// Token: 0x0600138F RID: 5007 RVA: 0x0003902B File Offset: 0x0003722B
public static bool IsDaylightSavingTime(DateTime time, DaylightTime daylightTimes)
{
return(TimeZone.CalculateUtcOffset(time, daylightTimes) != TimeSpan.Zero);
}
public override TimeSpan GetUtcOffset(DateTime time)
{
return(new TimeSpan(TimeZone.CalculateUtcOffset(time, GetDaylightChanges(time.Year)).Ticks + m_ticksOffset));
}