I'm trying to get a combo to work. I can't get the Infragistics UltraCombo or the MM.NET Combo control to work properly. I'm setting the following properties:

BindingSource = UnitsOfMeasure (this is the lookup table business object)
BindingSourceDisplayMember = cDescription
BindingSourceValueMember = cUnitOfMeasure
BindingValueSource = CommodityCode (source table business object)
BindingValueSourceMember = cReportUnit

On the form, the UI displays properly, the combo is being populated properly. When I select a value, it is not being written back to the business object. When I try to save, the cReportUnit field is empty. Again, this happens with both the MM.NET ComboBox and the MM.NET Infragistics UltraCombo controls.

Apparently I am missing something! Any ideas?