Late-bound version of RegisterInstance in Unity

Question

In our project, we use Unity as a dependency injection framework. Now I am faced with a situation, where I need a late-bound version of IUnityContainer.RegisterInstance() .

In ninject, the code I am trying to do, would look something like this:

this.Bind<IMyInterface>().ToMethod(context => GetMyObjectLateBound());

In Unity, however, I have not found a way of doing this, so far.

The reason, why I need this, is that the Instance of IMyInterface is not created yet by the time, that the binding happens and the object creation is also not handled by Unity (and I cannot replace this anytime soon).

Answer 1

Unity supports Lazy. You need to add the following extension to unity:

unityContainer.AddNewExtension<LazySupportExtension>();

then you can do the following:

unityContainer.RegisterType<IComponent, Component1>(); 
var lazyComponent = unityContainer.Resolve<Lazy<IComponent>>();

Hope this helps.