#9 List classes to implement IBindingList

[Liam Westley]

Ability to expose the Items property in a more
meaningful manner for data binding.

List classes should support following elements of
IBindingList;

AllowEdit (true), AllowNew (true), AllowRemove (true),
AddNew

Items not supported;

IsSorted, SortDirection, SortProperty,
SupportsChangeNotification, SupportsSearching,
SupportsSorting, AddIndex, ApplySort, Find,
RemoveIndex, RemoveSort, ListChanged