Set Focus on Button

[Gidi]

Hi,

In my form i have dataGrid and button. my user can navigate between the
dataGrid cells by clicking the enter button. if the user left an empty row
(all cells are empty) i want that when he will click the last cell the focus
will be on the button.

i tried to write this code:

if(dataGrid1.Cu rrentCell==7)
{
ok_btn.Focus();
}
but that's not bringing the ok_btn to focus, it seems like it's a tabindex
problem, but i tried to change that too during runtime, but it didn't help.

what can i do?

thanks,
Gidi