I have an Image down some controls in a XAML visual tree. I would like to display a design-time image, so that I can check layout, dimensions, etc. Something equivalent to this: <UserControl.Re...

I feel as though I still see a lot of guidance and advice stating that a view-first approach is the best way to go to get Blendability in your application. However, with d:DataContext, d:DesignData...