I assume you've tried tracing in the debugger? It's most likely a DBNull.Value somewhere that needs to be handled differently.

~~Bonnie

>How do I trap for what is not casting?
>
>Win form with 2 bizobjects and 2 tables. The &Save button has the primary bizobject defined.
>
>I have 7 text boxes all bound, and a dropdown that is a static collection of the dropdown.