When the App starts it calls OnLaunched() in App.xaml.cs:

       protected override async void OnLaunched(LaunchActivatedEventArgs e)


           VenturaApplication.OnLaunched(typeof(MainPage), e);


The first parameter in Ventura.OnLaunched() is the main page that will be created.

The main page should only contain a single control:




In the Loaded event you can put pages that should auto-open on startup:

       private void Page_Loaded(object sender, RoutedEventArgs e)


           Navigator.AddTab("Start Page", "Start Page", new StartPage(), "STARTPAGE");