Generic routable viewmodel

[AlienJust]

Hi, I'm writing Avalonia desktop app and I have VM that looks like:
public class SampleViewModel<T> : ReactiveObject, IRoutableViewModel, ISampleViewModel {...}

interface ISampleViewModel is not generic:

public interface ISampleViewModel : IRoutableViewModel, INotifyPropertyChanged
{
    string Greeting { get; }
}

also I have view for ISampleViewModel:
public partial class SampleView : ReactiveUserControl<ISampleViewModel>

in app.axaml.cs I register View for VM class:
Locator.CurrentMutable.Register<IViewFor<ISampleViewModel>>(() => new SampleView());

Then I try to navigate to it from my MainViewModel:

public ICommand NavigateToSampleVm => ReactiveCommand.Create(() =>
{
    Router.Navigate.Execute(new SampleViewModel<byte>())
    .Subscribe(vm => { Console.WriteLine(">> Current vm is " + ((vm == null) ? "NULL" : vm.GetType().FullName)); });
    Console.WriteLine("Navigated to sample view model");
});

But I don't see my view inside RoutedViewHost in MainWindow (there is only DefaultContent there).

If I remove generic part from VM class SampleViewModel then navigation works as expected.

Is it possible to use generic view models for navigation somehow?

[glennawatson]

With Avalonia it's worth also highlighting it to their team. They have gitter chat.

They produce their own rxui plugin so having both teams eyes on the problem can be worthwhile.

[AlienJust]

Tried this scenario for WPF. Got the same behavior.
Locator.CurrentMutable.Register<IViewFor<SampleViewModel<byte>>>(() => new SampleView()); works well.

[AlienJust]

Hm, it may be related reactiveui/Splat.DI.SourceGenerator#137

[glennawatson]

Unlikely. Splat source generator just auto registers stuff for you. Unlikely to be splat itself. Best bet is to ask over at Avalonia. The RoutedViewHost is their control and they handle their own routing and reactiveui integration.

[csillikd]

Any solution found?

[glennawatson]

Likely your best avenue for an answer is the Avalonia team. They manage their own reactiveui plugin.

[glennawatson]

Specifically the RoutedViewHost etc are all Avalonia components.