How to initializeShell in XBAP/Prism?

Question

In WPF/PRISM when you create the shell it will be assigned toApp.Current.MainWindow. However in a WPF in Browser (XBAP) the line:

App.Current.MainWindow = (Window)Shell;

fails with the error message:

Unable to cast object of type 'XBAPClient.Page1' to type 'System.Windows.Window'.

protected override DependencyObject CreateShell()
{            
    return this.Container.GetExportedValue<Page1>();
}

protected override void InitializeShell()
{
    base.InitializeShell();
    App.Current.MainWindow = (Window)Shell;
    App.Current.MainWindow.Show();
}

How can I load the shell?

Answer 1

In XBAP Application.Current.MainWindow is MS.Internal.AppModel.RootBrowserWindow.

You should only assign your page to window content like this:

...
protected override void InitializeShell()
{
    base.InitializeShell();    
    Application.Current.MainWindow.Content = Shell;
}
...