如何使用的TimeZoneInfo夏令时期间获取本地时间? [英] How to use TimeZoneInfo to get local time during Daylight Savings Time?
问题描述
我想要使用的DateTimeOffset及时在任何时区传达一个特定的时刻。我无法弄清楚如何使用的TimeZoneInfo处理夏令时。
I'm trying to use DateTimeOffset to convey a specific moment in time across any time zone. I can't figure out how to use TimeZoneInfo to deal with daylight savings time.
var dt = DateTime.UtcNow;
Console.WriteLine(dt.ToLocalTime());
var tz = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time");
var utcOffset = new DateTimeOffset(dt, TimeSpan.Zero);
Console.WriteLine(utcOffset.ToOffset(tz.BaseUtcOffset));
这打印出:
6/2/2010 4:37:19 PM
6/2/2010 3:37:19 PM -06:00
我在中央时区,而我们目前在夏令时。
我想获得的第二行改为:
I am in the central time zone, and and we are currently in daylight savings time. I am trying to get the second line to read:
6/2/2010 4:37:19 PM -05:00
BaseUtcOffset显然不改变的基础上DST。
BaseUtcOffset apparently doesn't change based on DST.
怎样才能获得正确的时间用正确的偏移值?
How can I get the the right time with the proper offset value?
感谢。
推荐答案
您需要从的TimeZoneInfo得到UTCOFFSET,然后传递给ToOffset()方法:
You need to get the UtcOffset from the TimeZoneInfo, then pass that to the ToOffset() method:
var dt = DateTime.UtcNow;
Console.WriteLine(dt.ToLocalTime());
var tz = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time");
var utcOffset = new DateTimeOffset(dt, TimeSpan.Zero);
Console.WriteLine(utcOffset.ToOffset(tz.GetUtcOffset(utcOffset)));
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