How to get hold of MauiAppBuilder instance?

[ataparia]

Hi Team,
I need to get hold of MauiAppBuilder instance in a view model. To be precise, I need the "Services" property that comes off the MauiAppBuilder class so that I can get to a specific service as this service is not injected through the constructor. Is there any way to get hold of this property in the viewmodel classes?

[Ghevi]

I think you can inject IServiceProvider and do
var myService = serviceProvider.GetRequiredService<IMyService>();

Or you can inject IServiceScopeFactory and do
using var scope = scopeFactory.CreateScope();
var myService = scope.ServiceProvider.GetRequiredService<IMyService>();

Does this help you?

[ataparia]

Thanks @Ghevi. That doesnt work I guess. I get runtime exception when I put IServiceProvider in the constructor of the MainPage.xaml.cs. I dont know if its a framework limitation where we cannot use constructor injection in MainPage.xaml.cs

[Ghevi]

Ahh I see, you also have to register MainPage and AppShell in MauiProgram.cs and then set the MainPage property in the AppShell.cs, see the repository I've uploaded, then it works.
I'm not sure if this is the best way tho.

You can also check this video that explains DI better.

[ataparia]

Thanks a ton @Ghevi. Seems like I have to register MainPage in the MauiProgram. It works perfectly. Thanks again for your help.

[Ghevi]

You're welcome, have a good day :)