Register and resolve generic types with Castle Windsor

If you implement repositories using a generic type T, you can use a simple resolving technic in Castle Windsor. Instead of specifying every type like:

   1: Container.Register(Component.For<IRepository<Service>>()

   2: .ImplementedBy<NHibernateRepository<Service>>());

   3: Container.Register(Component.For<IRepository<Employee>>()

   4: .ImplementedBy<NHibernateRepository<Employee>>()

   5: .LifeStyle.Transient);

But the is a more simple approach where you don´t have to specify each actual implementation, where you just tell Windsor that it is a generic type:

   1: Container.Register(

   2: Component.For(typeof (IRepository<>))

   3: .ImplementedBy(typeof (NHibernateRepository<>))

   4: .LifeStyle.Transient);

And you just saved yourself from a lot of typing. But keep in mind that people might request just anything the want, so to keep in control of what should accepted you might shield your implementation with a “…: Where T….” to encapsulate which types should be accepted.