Hello,

I have this code:

public partial class App : Application
    {
        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);        

            var mainVM = new MainViewModel
            (
                new Service1(),
                ...
                new Service10(),
            );

            var window = new MainWindow();
            window.DataContext = mainVM;
            window.Show();

        }
    }

I pass all my Services instances to the MainViewModel. Within the MainViewModel I spread those services to other ViewModels via constructor parameter passing.

Should I use any DI framework for the services in the App class?

If yes whats the benefit of resolving the services instead of just creating the instance manually... ?