Dynamic Localization wpf

wpflanguageswitch.cs

In code:
 <Button 
            Content="{DynamicResource Previous}" 
            Command="{Binding PrevView}" Grid.Column="0"/>

    <Window.Resources>
        <ResourceDictionary>
            <!--<Selectors:ViewSelector x:Key="ViewSelector">
            </Selectors:ViewSelector>-->
            <ResourceDictionary.MergedDictionaries>
                <local:ResourceDictionaryLocator Assembly="{x:Type Windows:MainWindowStudioFlow}"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Window.Resources>

public class ResourceDictionaryLocator : ResourceDictionary
  {
		private Type _assembly ;
		public Type Assembly
		{
			set
			{
				_assembly = value;
				updateSrc();
			}
		}
		public ResourceDictionaryLocator()
		{
			ModuleBootstrapper.LanguageChanged += (s) => updateSrc();
		}

		private void updateSrc()
		{
			var uriSRC = ModuleBootstrapper.GetCurrentUICultureSource("StringResources", _assembly);
			base.Source = uriSRC;
		}

	}
public static class ModuleBootstrapper
  {
public static Uri GetCurrentUICultureSource(string resourceName, Type containingModule)
  	{

			var name = containingModule.Assembly.GetName().Name;
			var cult = Thread.CurrentThread.CurrentUICulture.ToString();

			var location = cult == "en-US"
				? string.Format("pack://application:,,,/{0};component/Resources/{1}.xaml", name, resourceName)
				: string.Format("pack://application:,,,/{0};component/Resources/{1}.{2}.xaml", name, resourceName, cult);
			var uri = new Uri(location, UriKind.RelativeOrAbsolute);
			return uri;
		}

		public static ResourceDictionary GetCurrentUICultureResourceDictionary(string resourceName, Type containingModule)
		{
			var dict = new ResourceDictionary();

			var uri = GetCurrentUICultureSource(resourceName, containingModule);
			dict.Source = uri;
			return dict;
		}
  	public static void LoadCulturalDictionary(Collection<ResourceDictionary> mergedDictionaries, string stringresources, Type getType)
		{
			var name = CultureInfo.CurrentUICulture.Name;
			if (name != "en-US")
			{
				var existing = mergedDictionaries.FirstOrDefault(rd => rd.Source.OriginalString.Contains(stringresources));
				if (existing != null)
					mergedDictionaries.Remove(existing);

				var dict = ModuleBootstrapper.GetCurrentUICultureResourceDictionary(stringresources, getType);
				mergedDictionaries.Add(dict);
			}
		}

		public static void ChangeLanguage(string code)
		{
			Thread.CurrentThread.CurrentUICulture = CultureInfo.GetCultureInfo(code);
			if(LanguageChanged != null)
				LanguageChanged(code);
		}

		public static event Action<string> LanguageChanged;
	}