autofac multiple services (same interface - multiple addons providing it) how to implement?

Question

I have a service interface, lets say IAddonServiceX which is implemented by many, but not all addons to a system. I want to have an IEnumerable so that I could iterate and execute methods for every addon that registered this service? Ho can this be done with autofac?

Answer 1

Autofac has implicit support for it, so you just need register your implementations with

builder.RegisterType<Impl1>.As<IAddonServiceX>();    
builder.RegisterType<Impl2>.As<IAddonServiceX>();

And when you are resolving an IEnumerable<IAddonServiceX> with container.Resolve<IEnumerable<IAddonServiceX>> or using IEnumerable<IAddonServiceX> in your constructor then Autofac will provide you all the implementations.