I want to create something like a text localization system. Say I have a Dictionary<string, Dictionary<string, string>> mapping from language codes to translation tables containing key-value pairs, and a global setting of the currently active language. There'll be custom controls like a LocalizedLabel that exposes a Key property to update its Text accordingly.

Is there a clean way to specify bindings to a global resource (like an application-scope StaticResource), or do I have to inject the same thing into all such viewmodels, or even resort to a singleton?