Question

I got a class hierarchy with about 30 classes which is four levels deep.

For instance:

• Class1
  • Class1a
    • Class1ac
  • Class1b
• Class2

To that I got an interface called IConsumerOf<T>.

How can I get implementors of IConsumerOf<Class1> to also be invoked by all classes that inherit Class1? (without implementing IConsumerOf<Class1a> etc)

Edit: Adding a type constraint for the interface is not an option. And do note the Autofac tag.

Answer 1

builder.RegisterSource(
    new ContravariantRegistrationSource());

Enables this behaviour :). Cheers!