Avalonia I18N Setting

i18n.md

Add language resource to App.axml:

<Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceInclude Source="avares://MyAssembly/Assets/Languages/Lang.ENG.xaml"></ResourceInclude>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
</Application.Resources>

Add language selection command to view model:

public ReactiveCommand<string, Unit> LangSelection { get; }

LangSelection = ReactiveCommand.Create((string lang) =>
{
  Application.Current?.Resources.MergedDictionaries!.Replace(Application.Current.Resources.MergedDictionaries[0], new ResourceInclude
  {
      Source = lang switch
      {
          "TC" => new Uri("avares://MyAssembly/Assets/Languages/Lang.TC.xaml"),
          "SC" => new Uri("avares://MyAssembly/Assets/Languages/Lang.SC.xaml"),
          "ENG" => new Uri("avares://MyAssembly/Assets/Languages/Lang.ENG.xaml"),
          _ => new Uri("avares://MyAssembly/Assets/Languages/Lang.ENG.xaml"),
      }
  });
});