Hi folks!! After a time using NHib, I think is time to contribute a bit. My idea is to implement an inheritance of bag which implements the IBindingList interface. This will allow to put a bag directly into a datagrid and, implementing IEditableObject in the objects inside that bag, it becomes possible to edit directly those objects and persists directly. I

I wrote about it just recently in the development mailing list, see here.

I think it's better to add your own collection type instead of trying to retrofit IBindingList implementation on the existing type.

Take a look at what I did to add generic interface to NHibernate.
It would allow you to create a IBindingList wrapper to IList without modifying NHibernate.