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QuestionWPF .Net Core Dependency Injection & View Models Pin
Kevin Marois14-Dec-22 12:06
professionalKevin Marois14-Dec-22 12:06 
I'm setting up a sample .Net Core WPF app. I want to implement Unit Testing and I'd like to learn the right way to use DI with Views & View Models.

So far I have this
public partial class App : Application
{
    public static IHost? AppHost { get; private set; }

    public App()
    {
        AppHost = Host.CreateDefaultBuilder()
                    .ConfigureServices((hostContext, services) =>
                    {
                        services.AddSingleton<LoginViewModel>();
                        services.AddSingleton<LoginView>();
                    })
                    .Build();
    }

    protected override void OnStartup(StartupEventArgs e)
    {
        AppHost!.Start();

        base.OnStartup(e);
    }

    protected override async void OnExit(ExitEventArgs e)
    {
        await AppHost!.StopAsync();

        base.OnExit(e);
    }
}
How does the LoginView get the LoginViewModel? In my .Net Framework apps I use a ViewModel locator. Is there a best practice with WPF .Net Core, or would that work fine here also?

Thanks
If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.

AnswerRe: WPF .Net Core Dependency Injection & View Models Pin
Graeme_Grant31-Dec-22 3:15
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