Question

i have base class and several derived classes. how can i resolve these derived types by means of Unity into IEnumerable collection? i’ve tried smth like

var myObjectList = (IEnumerable<BaseClass>) UnityContainerFactory.UnityContainer.ResolveAll(typeof(BaseClass));

But it raises an invalidCastException

Answer 1

You should just use the generic overload of ResolveAll.

var myObjectList = UnityContainerFactory.UnityContainer
                                        .ResolveAll<BaseClass>();

Alternatively, use Enumerable.Cast:

var myObjectList = UnityContainerFactory.UnityContainer
                                        .ResolveAll(typeof(BaseClass))
                                        .Cast<BaseClass>();