>>I revisited the test, reset property sheet entries to 'default', open grid.init event and set column2.controlsource to the first column there. Also, I changed '' to space(1) in button.click event. Unfortunately, I still get the same results. Don't take me wrong, I would be extremely happy if grid will work this way more stable than now, but it does not.
>
>Init on the form or init on the Grid? In any event I do my setting after both of these events in a home grown method InitUI. By first column do you mean first column in the table? Are you seriously suggesting that VFP can only make the first column of a grid the first column of a table? I promise you it works. And I don't get you wrong. You want something that works and don't care about anything else.

Ok, I moved it to Form.Init and it's the same. Of course, I don't think that VFP can make only first field to the first column (sorry but it's not very polite suggestion), but to do this you should set column.controlsource explicitly in code and do it subsequently after each recordsource rebuilding. I don't want to argue against your experience, it's yours and if it works for you, that's fine for me.