MVC4 Binding an object which has a property of type BusinessListBase

Hi

I have a viewmodel set up which is of type object1. Object1 has some properties, one of which is another object(object2) of type BusinessListBase. Currently when I submit my form using defaultModelBinder, object2 always has count = 0.

Is the only way to bind the list to use FormCollection as below from the using csla ebook:

public ActionResult EditList(FormCollection collection) { var list = RoleEditList.GetRoles(); UpdateModel(list, collection); SaveObject(list, false); return View(); }

If so, how does UpdateModel map the keys to the listitems, as the key does not exactly match, and it doesn't seem to do anything in my code?

Thanks