>
> Doing this every time I open the form it must reopen all the Query, A lot of
> unnecessary and sometimes time consumig job.

it shouldn't be to tricky and time-consuming to add:

if not qry.Active then
begin
prepare_and_open;
end;

in the OnShow event of a form.


And the grids do also disappear at design time when putting changing
it's parent to another control (ie panel, tabsheet).


Luc.