Question

I am observing some strange behavior in case of DateTime.ParseExact method with the Swedish (sv-SE) culture.

My computer’s culture is en-US but the business logic demands the sv-SE culture. So I set it on the current thread first.

Thread.CurrentThread.CurrentUICulture = new CultureInfo("sv-SE");

Then I do the following to parse the DateTime value. The datetime I am trying to parse here is 11:57 AM on 27th May 2012.

DateTime.ParseExact("270512T11:57", "ddMMyyThh:mm", Thread.CurrentThread.CurrentUICulture);

This works just fine.

But I get the exception when the time is from the night. When I try to parse the datetime stamp of value 11:57 PM on 27th May 2012.

DateTime.ParseExact("270512T23:57", "ddMMyyThh:mm", Thread.CurrentThread.CurrentUICulture);

The above line gives the FormatException with the message String was not recognized as a valid DateTime..

What is really wrong here?

Answer 1

hh is 12-hour clock only. If you change your format string to “ddMMyyTHH:mm” it should work.