Autofac difference between Register and RegisterType

Question

I have started to use Autofac following this tutorials: http://flexamusements.blogspot.com/2010/09/dependency-injection-part-3-making-our.html

Simple class with no pa

Answer 1

Btw there is a better solution to this Autofac introduced the .WithParameter() extension to their registration builder.

.RegisterType<MultipleOutputService>().As<IOutputService>().WithParameter("parameterName", "parameterValue");

This should cater for the event that you need to pass something other than an interface type to one of your constructors

Answer 2

You can't write that code because it doesn't make sense in C#.
RegisterType is a generic method; generic methods must take types as generic parameters.

You're trying to register a type with a custom way to create it (inyour case, a constructor parameter); the only way that C# supports to specify such a thing is a lambda expression (or other delegate).

Answer 3

The lambda variant enables us to do some logic when constructing the instance.