Is there a generic TimeZoneInfo For Central Europe?

Question

Is there a generic TimeZoneInfo for Central Europe that takes into consideration both CET and CEST into one?

I have an app that is doing the following:

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Answer 1

Firstly, I'd like to applaud mgnoonan's answer of using Noda Time :) But if you're feeling less adventurous...

You're already using the right time zone - but you shouldn't be using BaseUtcOffset which is documented not to be about DST:

Gets the time difference between the current time zone's standard time and Coordinated Universal Time (UTC).

It can't possibly take DST into consideration when you're not providing it a DateTime to fetch the offset for :)

Assuming someDate is a DateTime, you could use:

DateTimeOffset dto = new DateTimeOffset(someDate, tzi.GetUtcOffset(someDate));

Or just ConvertTimeToUtc:

var utcDate = TimeZoneInfo.ConvertTimeToUtc(someDate, tzi);

Note that you should work out what you want to do if your local time occurs twice due to a DST transition, or doesn't occur at all.

Answer 2

Maybe Noda Time can help you out?