Register null as instance in Unity container

Question

I have a repository class with optional dependency:

class MyRepository : BaseRepository, IMyRepository
{
    public MyRepository(IDataContext dataContext, IC         


        

Answer 1

I found that RegisterType, instead of Register instance, supports returning null.

container.RegisterType(new InjectionFactory((c) => null));

This was the most straightforward way of getting an actual null to be returned.