Jay Kimble has prepared this short Silverlight/WP7 tip for you.
Source: Jay Kimble's Blog
I have struggled with dealing with this for sometime, and ultimately gave up. Today, I happened across something interesting. I’m doing some intense Isolated Storage stuff with WP7, and I’m using ViewModel. I analyzed one of the errors I was getting in the VS XAML designer, and discovered what in my ViewModel VS didn’t like. So here’s what I discovered.