在C＃3.5 FX创建在一个特定的时区的日期时间 [英] Creating a DateTime in a specific Time Zone in c# fx 3.5

问题描述

我试图创建一个单元测试来测试时，一台机器上的时区的变化，因为它已被错误设置，然后校正的情况。

I'm trying to create a unit test to test the case for when the timezone changes on a machine because it has been incorrectly set and then corrected.

在测试我需要能够在一个没有本地时区创建日期时间的对象，以确保运行测试的人可以做这样成功地不论它们位于何处。

In the test I need to be able to create DateTime objects in a none local time zone to ensure that people running the test can do so successfully irrespective of where they are located.

从我可以从DateTime构造我可以设置时区看到是本地时区的UTC时区或未指定。

From what I can see from the DateTime constructor I can set the TimeZone to be either the local timezone, the UTC timezone or not specified.

如何创建一个DateTime与像PST特定的时区？

How do I create a DateTime with a specific timezone like PST?

推荐答案

<一个href="http://stackoverflow.com/questions/246498/creating-a-datetime-in-a-specific-time-zone-in-c-fx-35#246512">Jon's回答有关时区的谈判，但我建议使用的的TimeZoneInfo 代替。

Jon's answer talks about TimeZone, but I'd suggest using TimeZoneInfo instead.

我个人更喜欢保持事情UTC在可能的情况，所以我建议这样的结构：

Personally I like keeping things in UTC where possible, so I'd suggest a structure like this:

public struct DateTimeWithZone
{
    private readonly DateTime utcDateTime;
    private readonly TimeZoneInfo timeZone;

    public DateTimeWithZone(DateTime dateTime, TimeZoneInfo timeZone)
    {
        utcDateTime = TimeZoneInfo.ConvertTimeToUtc(dateTime, timeZone); 
        this.timeZone = timeZone;
    }

    public DateTime UniversalTime { get { return utcDateTime; } }

    public TimeZoneInfo TimeZone { get { return timeZone; } }

    public DateTime LocalTime
    { 
        get 
        { 
            return TimeZoneInfo.ConvertTime(utcDateTime, timeZone); 
        }
    }        
}

您可能希望改变时区名的TimeZoneInfo为了让事情更清楚 - 我preFER了简短的名字我自己

You may wish to change the "TimeZone" names to "TimeZoneInfo" to make things clearer - I prefer the briefer names myself.

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