Bob,

Gotcha...I see the problem now. When you specify the BindingSourceDisplayMember and BindingSourceValueMember properties you are specifying the name of a DataTable variable...not the actual name of the DataTable within the DataSet. For example:

"dtAvailableList.BidNumber";

I recommend checking out the mmRole business object source code to see how we're doing this at the Framework level. We have two different DataTables within a single DataSet. Each DataTable has a different name..."UserRoles" is the name of the DataTable that is used to fill the Available list, and NonMembership is the DataTable that is used to fill the Selected list (ultimately we're creating DataViews from these which the lists are bound to, but I'll keep it simple here).

So, in this example, "UserRoles" and "NonMembership" are the table names that would be used when setting the BindingSourceDisplayMember and BindingSourceValueMember properties.

Regards,