Registering the bootstrapper in a Silverlight Application

App.xaml.cs

public App()
{
    Startup += Application_Startup;
    Exit += Application_Exit;
    UnhandledException += Application_UnhandledException;

    var bootstrapper = new AppBootstrapper();
    Resources.Add("Bootstrapper", bootstrapper);

    InitializeComponent();
}

private void Application_Startup(object sender, StartupEventArgs e)
{
    // this.RootVisual = new MainPage();
}