NumericTextBox not doing the correct thing on German Windows

We are using the NumericTextBox for several data entry controls in a WPF application where we are using the MVVM pattern - so the controls are bound to a double property. Everything works just great on US English Windows.

Now on German Windows this happens:

• One of the default values (set via the ViewModel) is 0.01 and this shows just like this: 0.01 on the NumericTextBox. Ideally it should show as 0,01, right?

• If I try to change this value to 2.4 by editing the control it will revert to 24

• If I type in 2,4 then it also goes to 24

This kind of scenario happens to all the NumericTextBox controls.

We also have the Mindscape graph in this product and it shows numeric values on German Windows with the comma - which is correct.

Any insight is welcome. This goes for French Windows also

cymrieg

PS. If you don't want to install German Windows to try this then I duplicated it, on Win7, by going to the Control Panel:

• Select "Region and Language"

• If you select German in the Formats tab I found it did not change the format in my Application.

• Select the Administrative Tab and change the language for the non-Unicode to German then the Numeric text box shows the symptoms. You have to reboot for this change to take affect.

I thought WPF/.NET programs were all Unicode - no?

Hello

Thanks for contacting us about this. We have designed the numeric text boxes to support any language, and so the comma symbol should indeed be used in the scenario you described. However, I have tried this at my end and everything seems to be working as expected.

I do remember there was a bug related to the numeric text box culture support a while ago, so it may simply be a case that you don't have the latest version of WPF Elements. Try install the latest nightly build of WPF Elements and see if this resolves the problem: http://www.mindscapehq.com/products/wpfelements/nightly-builds

-Jason Fauchelle

Thanks for the response it got me looking else where and I needed to add this line to our App.xaml.cs file in the OnStartup method:

FrameworkElement.LanguageProperty.OverrideMetadata(typeof(FrameworkElement), new FrameworkPropertyMetadata(XmlLanguage.GetLanguage(CultureInfo.CurrentCulture.IetfLanguageTag)));

Great to hear you got it working!

-Jason Fauchelle