Do not want checked=True for any radio button form loads

[Dinosaur]

My form has four panels, each contains radio buttons.

At design time, all buttons have checked = false, which is what I want when form loads.

When the form loads a radio button in one panel has checked = true

For the other three panels, all radio buttons have checked = false.

I have tested this with no code in the Form_load subrroutine.

How is checked = true being set for that that one radio button ?

Does The IDE somehow force at least one radio button on the form to have checked = true?

Can I force checked = false for all radio buttons when the form loads? If so, how?

 

[JohnH]

I can confirm the issue, it happens when a radiobutton is the first tabindex. If you have another control you can set as first tabindex the issue is avoided, if not you can set first radiobuttons Checked to False in Shown event.

 

[Dinosaur]

John H: Thanx! I will take your advice about the first tabindex. It looks correct to me.