Load WPF styles or other Static Resources from an external file or assembly
Referencing an external ResourceDictionary (XAML File):
<Application.Resources> <ResourceDictionary Source="MyResources.xaml" /></Application.Resources>
Referencing an external ResourceDictionary (DLL):
<Application.Resources> <ResourceDictionary Source="/MyExternalAssembly;component/MyResources.xaml" /></Application.Resources>