title: How to navigate to cs file that derives from custom ApplicationPage (with xaml)
body: <p>How can I navigate to .cs file that derives from custom PhoneApplicationPage? The inheritance chain looks like this: PhoneApplicationPage -> My casual page with xaml and cs -> page that will derive all with little modifications. <code>NavigationService.Navigate(new Uri("/NewPage.cs", UriKind.Relative));</code> throws exception...</p>