App.xaml file does not get parsed if my app does not set a StartupUri?

Question

Background: I\'m creating a WPF app using MVVM, and using a DI container to build my ViewModels

My App.xaml looks like this:

Answer 1

Rather than overriding OnStartup, try using an event instead:

Code behind:

public partial class App : Application
{
    public App()
    { }
    private void Application_Startup(object sender, StartupEventArgs e)
    {
        // TODO: Parse commandline arguments and other startup work 
        new MainWindow().Show();
    }
}