|
static private GetUtcOffsetFromUtc ( System.DateTime time, |
||
| time | System.DateTime | |
| zone | ||
| isDaylightSavings | System.Boolean | |
| isAmbiguousLocalDst | System.Boolean | |
| return | System.TimeSpan | |
public static DateTime FromBinary(long dateData)
{
long num2;
if ((dateData & -9223372036854775808L) == 0L)
{
return(FromBinaryRaw(dateData));
}
long ticks = dateData & 0x3fffffffffffffffL;
if (ticks > 0x3fffff36d5964000L)
{
ticks -= 0x4000000000000000L;
}
bool isAmbiguousLocalDst = false;
if (ticks < 0L)
{
num2 = TimeZoneInfo.Local.GetUtcOffset(MinValue, TimeZoneInfoOptions.NoThrowOnInvalidTime).Ticks;
}
else if (ticks > 0x2bca2875f4373fffL)
{
num2 = TimeZoneInfo.Local.GetUtcOffset(MaxValue, TimeZoneInfoOptions.NoThrowOnInvalidTime).Ticks;
}
else
{
DateTime time = new DateTime(ticks, DateTimeKind.Utc);
bool isDaylightSavings = false;
num2 = TimeZoneInfo.GetUtcOffsetFromUtc(time, TimeZoneInfo.Local, out isDaylightSavings, out isAmbiguousLocalDst).Ticks;
}
ticks += num2;
if (ticks < 0L)
{
ticks += 0xc92a69c000L;
}
if ((ticks < 0L) || (ticks > 0x2bca2875f4373fffL))
{
throw new ArgumentException(Environment.GetResourceString("Argument_DateTimeBadBinaryData"), "dateData");
}
return(new DateTime(ticks, DateTimeKind.Local, isAmbiguousLocalDst));
}
public DateTime ToLocalTime()
{
if (this.Kind == DateTimeKind.Local)
{
return(this);
}
bool isDaylightSavings = false;
bool isAmbiguousLocalDst = false;
long ticks = TimeZoneInfo.GetUtcOffsetFromUtc(this, TimeZoneInfo.Local, out isDaylightSavings, out isAmbiguousLocalDst).Ticks;
long num2 = this.Ticks + ticks;
if (num2 > 0x2bca2875f4373fffL)
{
return(new DateTime(0x2bca2875f4373fffL, DateTimeKind.Local));
}
if (num2 < 0L)
{
return(new DateTime(0L, DateTimeKind.Local));
}
return(new DateTime(num2, DateTimeKind.Local, isAmbiguousLocalDst));
}
