Question

I have read lots of Autofac docs/wikis which indicate I can get a list of all the registered types by doing something as simple as shown below:

var builder = new ContainerBuilder();
builder.RegisterAssemblyTypes(Assembly.GetExecutingAssembly())
                .AssignableTo<IPersistedModel>();
var container = builder.Build();
var allTypes = container.Resolve<IEnumerable<IPersistedModel>>();

The problem is allTypes comes up empty.

In the debugger I can see inside the container and there are 7 matching types and even an array of IPersistedModel… but they do not get returned on Resolve().

What am I missing?

Answer 1

You need to register the types as the interface, either using .As<IPersistedModel>() or for all its interfaces using .AsImplementedInterfaces():

builder.RegisterAssemblyTypes(Assembly.GetExecutingAssembly())
            .AssignableTo<IPersistedModel>()
            .AsImplementedInterfaces();