How to configure referenced assemblies？

[TiangangLv]

I created a class library project, in which there is an abstract class
"ScreenViewModelBase",
I created another class library project, and established
"ShellViewModel: ScreenViewModelBase"
When I refer to these two class libraries in the main project, I create
"public class AppBootstrapper: Bootstrapper"
with exception "no registrations found for service ShellViewModel." so when I rewrite "ConfigureIoC", I add builder. Bind<Screenviewmodelbase>(). Toallimplementation(), the same exception will still occur, but when I no longer have cited After all the code is implemented to the main project in this way, this exception will not happen again. It seems that everything is normal again. I don't understand why? Is it related to the assembly?

[canton7]

In your ConfigureIoC method, you need to add the assemblies to builder.Assemblies.

So:

builder.Assemblies.Add(typeof(ShellViewModel).Assembly); 

[TiangangLv]

Thank you so much.