C#•17mo ago

Transition to Microsoft's Dependency Injection Library

https://gist.github.com/MarioFares/f935dd74aa461feefb227631af1c2b3e I was wondering what I can do to improve my App.xaml.cs file. I have seen this https://learn.microsoft.com/en-us/dotnet/communitytoolkit/mvvm/ioc but one of my service implementations takes an argument and I am not sure how best to do that. Otherwise, I am not sure if I am doing anything wrong.

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Ioc - .NET Community Toolkit

An introduction to the use of the IServiceProvider type through the Microsoft.Extensions.DependencyInjection APIs

2 Replies

Angius•17mo ago

The .AddX<IInterface, IImplementation>() have an overload that lets you provide the default implementation So, for example,

var seed = Random.Shared.Next();
services.AddSingleton<IRandomizer, TileRandomizer>(new TileRandomizer(seed)));

var seed = Random.Shared.Next();
services.AddSingleton<IRandomizer, TileRandomizer>(new TileRandomizer(seed)));

mario12136OP•17mo ago

I have a few questions about working with DI in WPF 1. Do I make all my views and view models services using services.Add...<>(). 2. Do I need to add models as services or should I avoid altogether having any contrusctors take models. 3. If I have a settings class that I want to access throught the entire, what is the best way to make it accessble. I tried this

    public IHost? AppHost { get; private set; }

    public new static App Current => (App)Application.Current;

    public Settings Settings => AppHost!.Services.GetRequiredService<Settings>();

    public IHost? AppHost { get; private set; }

    public new static App Current => (App)Application.Current;

    public Settings Settings => AppHost!.Services.GetRequiredService<Settings>();

and in any code I just say App.Current.Settings...

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Transition to Microsoft's Dependency Injection Library