Autofac: register generic type with nongeneric interface

Question

I'm trying to register (as Instance per Request) the generic type and non-generic interface. On internet I have found a lot of opposite examples, but none for this.

Thus, I have a class like this:

public class UnitOfWork<TContext> : IUnitOfWork where TContext : DbContext, new()

The generic class, but non-generic interface. In Autofac I was trying to register that this way:

builder.RegisterGeneric(typeof(UnitOfWork<>)).As<IUnitOfWork>().InstancePerHttpRequest();

But I'm getting error: The service 'Namespace.UoW.IUnitOfWork' is not an open generic type definition.

Of course, because it is not. But I don't know how to register it.

Thanks.

Answer 1

You only need RegisterGeneric if you also have a generic interface.

In your case you only have a non generic interface IUnitOfWork and also only one DbContext derived class so you can just register your UnitOfWork<Context> as a normal type with:

builder.RegisterType<UnitOfWork<Context>>()
       .As<IUnitOfWork>().InstanceP‌​erHttp‌​Request();

So any of your types requesting an IUnitOfWork will get an UnitOfWork<Context>.