Peter,
It depends on how the grid data is setup and also on how your form and grid refresh code is designed. Are you using tables linked with "Set Relation" or tables linked through the grid LinkMaster, RelationalExpr and ChildOrder properties?

If you want to control this completely, you may wish to populate the grid with a parameterized view and handle the grid refresh programmatically AFTER your combo validation is complete.

HTH
Barbara

>I have a grid on a form and because it is linked to a table, when I change the "controlling"
>combos, the grid immediately updates. In some cases, incorrectly, if by chance my error
>catching code messagebox up a warning to the user. Is there some way to trigger, when or
>when not the grid will display the updated "filter"'d records? The only alternative I can think of
>is VISIBLE=.F. on the entire grid or each individual column until I WANT it to display.
>
>Thanks