>>>It fires page.Activate, then Form's Activate.
>>>
>>>Is it possible to fire only textbox SetFocus() and not fire all other methods, because this causes lots of code executed and finally instead of setting focus on the bad field I'm getting moved to a new record...
>>>
>>>Thanks in advance
>>
>>In order to set focus to a control, the container it lives in must be activated first...
>
>In other words, I should have some form's flag to prevent execution of Page.Activate if I'm explicitly call page.txt1.SetFocus(), right?

I would add that if you are calling setfocus explicitly to do some logic. You should probably be using a custom method instead, which is called in the controls setfocus(), rather than putting the code directly in the setfocus event code.