Why are some time zones returned by GetSystemTimeZones not found by FindSystemTimeZoneById?

Question

I\'ve got an odd problem I can\'t seem to resolve. When I call TimeZoneInfo.GetSystemTimeZones on my Win 7 x64 machine I get 101 results. When I call TimeZone

Answer 1

TimeZoneInfo.FindSystemTimeZoneById method accepts the time zone id as parameter. You're using timeZoneInfo.StandardName instead.

It seems, that for these 3 zones values for TimeZoneInfo.StandardName and TimeZoneInfo.Id properties are different. Using this:

TimeZoneInfo.FindSystemTimeZoneById(timeZoneInfo.Id);

will solve the issue.