I never would recommend writing code in LostFocus, but this just you could
debug. So for the final build set proper Tab Order, and create controls in
the order you want them. Or at run-time please reset TabOrder with code...

Anyways temp fix...

Just in the last control of the Form, in it's LostFoucs please write code to
SetFocus to the control you wish. So if your last control was Textbox1, and
you want to set focus to a comboxbox1.. do the below

private void textbox1_LostFocus(object sender, EventArgs e)
{
   comboxbox1.Select();
   //you could write more code to get NextControl and like that.. to
debug...
}

VJ

Have you checked your form's ActiveControl property?

--
Bryan Phillips
MCSD, MCDBA, MCSE
Blog:  http://bphillips76.spaces.live.com