日期和时间格式在iOS上显示不正确

Question

I have some trouble with the date format on iOS. On Android it displays correctly.

var d = local.ToLongDateString();
var t = local.ToShortTimeString();
return string.Format("{0} kl. {1}", d, t);

This will display the date in English, and the time with 12-hour format. The phone region is set to Norway, phone language is Norwegian while English is given as the secondary language.

Result on iOS:

Sunday, April 8, 2018 kl. 6.00 PM

Result on Android:

søndag 8. april, 2018 kl. 18:00

Answer 1

I found the answer within the Xamarin Docs - iOS Localization :

If CFBundleDevelopmentRegion has not been specified in the Info.plist file, the Xamarin.iOS build tools currently use a default value of en_US.

The solution was to edit Info.plist with a text editor and add the following key:

<key>CFBundleDevelopmentRegion</key>
<string>no</string>

Answer 2

You could provide a format yourself:

local.ToString("dddd, MMMM d, yyyy kl. hh:mm tt", CultureInfo.InvariantCulture)

The code above should return a consistent result on all the targeting platforms:
Wednesday, April 4, 2018 kl. 10:24 AM

You can easily play with the solution here: http://rextester.com/PPP50237

More information on Custom Date and Time Format Strings can be found here .