How to switch UI Culture of data binding on the fly in Silverlight

Question

I have a TextBlock control, which is data bound to DateTime property.

The text displayed something like this:

Thursday, October 21, 2010

I n

Answer 1

I've found a better approach, which requires to update only the root visual.

public sealed class Localizer : INotifyPropertyChanged
{
  public Localizer() 
  {
    Culture = Thread.CurrentThread.CurrentCulture; 
  }

  XmlLanguage _language;
  public XmlLanguage Language 
  { 
    get { return _language; } 
    private set { _language = value; RaiseOnPropertyChanged("Language"); } 
  }

  CultureInfo _culture;
  public CultureInfo Culture 
  { 
    get { return _culture; }
    set 
    { 
      Contract.Requires(value != null);  

      if (_culture == value) return; 
      _culture = value; 

      Thread.CurrentThread.CurrentCulture =
      Thread.CurrentThread.CurrentUICulture = value;
      Language = XmlLanguage.GetLanguage(value.Name);

      RaiseOnPropertyChanged("Culture");
    }
  }

  protected void RaiseOnPropertyChanged(string propName) 
  {
    var e = OnPropertyChanged;
    if (e != null) e(this, new PropertyChangedEventArgs(propName));
  }

  public event PropertyChangedEventHandler OnPropertyChanged;
}

Now adding this instance to application resources:

Now bind it to your root visual (f.e. Frame, UserControl or Page) like this: