Way to fill collection with Unity

Question

I have two example classes

class ClassToResolve
{
    private List _coll;

    public ClassToResolve(List coll)
          


        

Answer 1

Unity will understand that T[] (array) dependencies are a list of things (but not IEnumerable, nor List). When you change the constructor of ClassToResolve to take an CollectionItem[] instead of a List you can configure your CollectionItem types as follows:

container.RegisterType("a");
container.RegisterType("b");
container.RegisterType("c");
container.RegisterType("d");

The trick here is to name all the registrations. A default (nameless) registration will never be part of a sequence dependency in Unity.

Now you can resolve ClassToResolve without the need to register it:

container.Resolve();

If you rather inject List you can add the following registration:

container.RegisterType, CollectionItem[]>();

And for IEnumerable you can add the following line:

container
  .RegisterType, CollectionItem[]>();