DateTimeElement displays wrong date for current locale

[johnsimons]

To reproduce this issue, set iPhone simulator settings in General | International to:
_Region Format = _Australia**

The run the Sample and go to:
Reflection API | Time Samples
As you can see the Alarm text says 6:30P even though in the code we have set it to 7:30AM.
When you click on it the picker initialises the time to 7:30AM.

Also, if you set the birthday to 29 July 1976 the application output displays:
Birthday: 28/07/1976 2:00:00 PM

[johnsimons]

Done a bit more investigation and the problem is actually in the implicit conversion between NSDate and DateTime.
According to https://bugzilla.novell.com/show_bug.cgi?id=621366 this should have been fixed in MonoTouch 4.2.0, but I'm running the latest 5.3.0!

The following code replicates the problem:

var originalDate = new DateTime (1975, 7, 29);
Console.WriteLine("DateTime={0}", originalDate);
NSDate convertedToNSDate = originalDate;
Console.WriteLine("NSDate={0}", convertedToNSDate);
DateTime convertedBackToDateTime = convertedToNSDate;
Console.WriteLine("DateTime={0}", convertedBackToDateTime);

That produces the following output:

DateTime=29/07/1975 12:00:00 AM
NSDate=1975-07-28 14:00:00 +0000
DateTime=28/07/1975 2:00:00 PM

[johnsimons]

Added fix in my fork:
johnsimons@58f5062

[rolfbjarne]

Actually the conversion is correct, you're not taking into account that the first DateTime= line has Kind=Unspecified, while the last has Kind=Utc.

I get this output if I add that information:
DateTime=7/29/1975 12:00:00 AM Kind: Unspecified
NSDate=1975-07-28 22:00:00 +0000
DateTime=7/28/1975 10:00:00 PM Kind: Utc

[rolfbjarne]

This has been fixed now.