Setting Culture (en-IN) globally in WPF application

Question

I have an application, which is based for India, and I'm setting Culture as:

Thread.CurrentThread.CurrentUICulture = new CultureInfo("en-IN");

The above code is called before the Window.InitializeComponent() method is called.

Still this is showing $ as CurrencySymbol in all TextBoxes.

If I bind a TextBox as following, it shows Rs. as CurrencySymbol:

Text="{Binding Salary,Mode=TwoWay,StringFormat=C,ConvertCulture=en-IN}".

Pilloff

Also keep this in mind: #520615 – Coker

Answer 1

I think you will need to add the following.

Thread.CurrentThread.CurrentCulture = new CultureInfo("en-IN");
Thread.CurrentThread.CurrentUICulture = new CultureInfo("en-IN");
FrameworkElement.LanguageProperty.OverrideMetadata(typeof(FrameworkElement), new FrameworkPropertyMetadata(
            XmlLanguage.GetLanguage(CultureInfo.CurrentCulture.IetfLanguageTag)));

Read more here:

http://www.west-wind.com/weblog/posts/2009/Jun/14/WPF-Bindings-and-CurrentCulture-Formatting

Just to give you an example, this is how I initialize the Culture in my program, based on the user setting, but you can simply replace UserSettings.DefaultCulture and UserSettings.Default.UICultrue with your wanted Culture.

private static void InitializeCultures()
{
    if (!String.IsNullOrEmpty(UserSettings.Default.Culture))
    {
        Thread.CurrentThread.CurrentCulture = new CultureInfo(UserSettings.Default.Culture);
    }
    if (!String.IsNullOrEmpty(UserSettings.Default.UICulture))
    {
        Thread.CurrentThread.CurrentUICulture = new CultureInfo(UserSettings.Default.UICulture);
    }

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

Garay

Thanks. I was missing the following line of code. FrameworkElement.LanguageProperty.OverrideMetadata(typeof(FrameworkElement), new FrameworkPropertyMetadata( XmlLanguage.GetLanguage(CultureInfo.CurrentCulture.IetfLanguageTag))); What actually this code do? – Pilloff

Take a look at the article I included, it includes a pretty good description of the issue. west-wind.com/weblog/posts/2009/Jun/14/… – Garay

Using CultureInfo.CurrentCulture.IetfLanguageTag always uses Microsofts default values for the given culture and completely ignores changes made by the user. For example here in Germany default date format is 'dd.mm.yyyy' but I manually configured this to be ISO 8601 compliant: 'yyyy-mm-dd' but this is ignored within WPF apps most of the time (some special controls like xceeds Grid behave different/smarter). – Oxalate

Please note that the CultureInfo.CurrentCulture.IetfLanguageTag is deprecated: "This property and the GetCultureInfoByIetfLanguageTag method are deprecated. Instead, you should use a the CultureInfo.Name property. IETF tags and names are identical.". You should probably use CultureInfo.Name instead as indicated. – Angelika

Answer 2

For me just works, if i put this code to the OnStartup overrided method:

public partial class App : Application
{
      public App()
      {                
      }

      protected override void OnStartup(StartupEventArgs e)
      {
          var vCulture = new CultureInfo("de-DE");

          Thread.CurrentThread.CurrentCulture = vCulture;
          Thread.CurrentThread.CurrentUICulture = vCulture;
          CultureInfo.DefaultThreadCurrentCulture = vCulture;
          CultureInfo.DefaultThreadCurrentUICulture = vCulture;

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

          base.OnStartup(e);
      }
}

Doenitz

And whats happen if i force en-US culture to the whole appliction, and my application run n a machine configured in spanish or any other culture not is en-US? – Secretarial

What you mean? The operating system language no make sense in this meaning. If you set en-US for the application, it stays and should run finely. – Spongioblast

Answer 3

Thread.CurrentThread.CurrentCulture = 
    System.Globalization.CultureInfo.GetCultureInfo("en-IN");

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

This will switch the default language for the entire application. You’ll want to use this only in startup code as this setting can be applied only once per application. You can still override individual forms when necessary as below

this.Language = XmlLanguage.GetLanguage(CultureInfo.CurrentCulture.IetfLanguageTag);

All WPF elements include a Language property that can be assigned and determines the Culture that is used for formatting.

Reference

Unmeet

Answer 4

To me just this worked, but in order to solve ToString and to make it work over the entire app, it's important to add it in constructor, not OnStartup etc, before you set up service container etc. otherwise it doesn't work in subsequent threads and CultureInfo.CurrentUICulture still resolves to the default system CultureInfo.

public class App : Application
{
  public App() 
  {     
    var culture = new CultureInfo("en-IN");
    CultureInfo.DefaultThreadCurrentCulture = culture;
    CultureInfo.DefaultThreadCurrentUICulture = culture;

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

     // should be before all this
     var host = Host
       .CreateDefaultBuilder()
       .ConfigureServices(ConfigureServices)
       ...;        
  }
}

Misreport

Answer 5

For my datagrid data i used below lines of code in App.xaml.cs & it worked .. for de it displayed dot and En it displayed comma for 4 digit numbers.

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

Fitzger

Answer 6

Also, there's another way of doing this, assuming that you're using a TextBlock:

<TextBlock Text="{Binding Salary, Mode=TwoWay, StringFormat='{}{0:C}', ConverterCulture='en-IN'}" />

Please bear in mind the single quotes are needed.

Conscious