Problem solved. The reason of my headache? The Sorted property of the combobox was set to true, which seem to tell the combobox to ignore the bindings. Not even documented in the help >:(

Thanks for your time.

>Hmmm...maybe I need more coffee this morning. It looks basically like the same code I have, and my pulldown works fine.
>
>If you're sure that your datatable has data, that the column names are correct, and that there's not a subsequent line of code that's clearing the combo, then I give. Maybe someone with eagle eyes can spot something that I'm missing.