The new Microsoft UI development technology WPF (formerly c.n. "Avalon") is about to release soon. It has support of XAML markup language and a code-behind files similiar to ASP.NET ones. The subject is when I am using ReSharper while editing this like code-behind file it naturally does not understand existing of XAML-generated partial class and treat usings particular ids (ui elements, etc) as errors. So it becomes practically unusable this way.
The simplest soluton would be supporting this like-generated files without any XAML/WPF intellisence tool (it is a whole new subsystem, I think).