I have a C# (2008/.NET 3.5) class library assembly that supports WPF (based on this article).
I\'ve created several windows, and am now attempting to create a common style
If you dont have an app.xaml, you can still load it into the appplication-level resources, but you have to write code (not xaml) to do it, similar to this...
void LoadIt()
{
ResourceDictionary MyResourceDictionary = new ResourceDictionary();
MyResourceDictionary.Source = new Uri("MyResources.xaml", UriKind.Relative);
App.Current.Resources.MergedDictionaries.Add( MyResourceDictionary )
}
check out this site for an example: http://ascendedguard.com/2007/08/one-of-nice-features-about-wpf-is-how.html