Do you have code that sends a Requery() message to the combobox in the PostRequeryHook() of the business object that loads its data? This ensures that the combo box is updated properly when the RowSource changes.
For example:
PostRequeryHook()
----------------
ThisForm.Combobox.Requery()
Regards,
Kevin McNeish
Eight-Time .NET MVP
VFP and iOS Author, Speaker & Trainer
Oak Leaf Enterprises, Inc.
Chief Architect, MM Framework
http://www.oakleafsd.com
