I have the following simplified code:

namespace Silverbits.Applications
{

public partial class SilverbitsApplication : Application
{

    [Import("MainPage")]
    public UserControl MainPage
    {
        get { return RootVisual as UserControl; }
        set { RootVisual = value; }
    }

    public SilverbitsApplication()
    {
        this.Startup += this.SilverbitsApplication_StartUp;
        this.Exit += new EventHandler(SilverbitsApplication_Exit);
        this.UnhandledException += this.SilverbitsApplication_UnhandledException;

        InitializeComponent();

    }


    private void SilverbitsApplication_StartUp(object sender, StartupEventArgs e)
    {

        CompositionInitializer.SatisfyImports(this);

    }

}

namespace Manpower4U
{
    public class App : SilverbitsApplication
    {
        public App() : base()
        {
        }
    }
}

namespace Manpower4U
{      
    [Export("MainPage")]
    public partial class MainPage : UserControl
    {

        public MainPage()
        {
            InitializeComponent();
        }
    }
}

The idea is that I have a Silverbits Library which is a completely different solution. And I have Manpower4U silverlight application that references my Silverbits library.

I want to export MainPage from Manpower4U and set it to the RootVisual in my SilverbitsApplication class.

SilverbitsApplication class is basically App.xaml/App.cs from the silverlight application, only I put it in a class library and subclassed App.cs file in Manpower4U, which is now the entry point of Manpower4U.

MEF cannot resolve the import. How do I get this to work?