Module.AttachToComponentRegistration not Running for Lifetime Scope Registrations

[tillig]

In an Autofac.Module you can use the AttachToComponentRegistration method to handle component events like Preparing.

While this works well for components registered in the base container (with whatever lifetime scope), it does not work for components registered on the fly when a new lifetime scope is started.

var builder = new ContainerBuilder();
builder.RegisterModule<MyHandlerModule>();
// RootType will get handled by AttachToComponentRegistration because it
// is in the original set of registrations.
builder.RegisterType<RootType>();
var container = builder.Build();

using(var scope = container.BeginLifetimeScope(
  b => b.RegisterType<LifetimeType>())
{
  // LifetimeType will not get handled by AttachToComponentRegistration
  // because it is registered on the fly.
}

A more comprehensive example is shown in this gist. The original discussion of this issue is on the Autofac user group.

[nblumhardt]

Duplicate of #218 I think?

[tillig]

DOH! Yup. Thanks.