UnityContainer resolve all types for one interface

Question

I have the following class:

public class Foo : IFoo
{
    public Foo(IBar[] bars);
}

IBar has multiple implementations that are all registered in the UnityContainer. When I call

UnityContainer.Resolve()

I want that the container to inject all known IBar implementations into the object.

How can I achieve this?

Yuval Itzchakov · Accepted Answer · 2014-10-24 08:26:04Z

6

As long as your registered types have a name applied to them:

container.RegisterType<IBar, ActualBar>("ActualBar");
container.RegsiterType<IBar, YetAnotherBar>("YetAnotherBar");

And given a proper public constructor as you mention:

public Foo(IBar[] bars)
{
}

Unity will take care of resolving all named registered instances into your constructor out of the box.

Foo foo = container.Resolve<Foo>();

answered Oct 24, 2014 at 8:26

Yuval Itzchakov

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2 Comments

Why does it need a name? I mean i expect it to work even without a name!

As long as each name is unique you will see all your instances or have access to them