Combobox is not moving when scrolling the Panel

Question

I have three Panels such as Panel1,Panel2,Panel 3.I have a combobox 1 which is added to Panel 1,Panel 2  and Panel 3 as well.

Combobox 1 has three items such as Item1,Item2,  and Item 3.

Multiple controls are added to Panel1,Panel 2,Panel 3 as well.

Panels are added to maincontrol.

Combobox 1 is also added to main control.

As per my requirement when I select Item 1, Panel1 is displayed and likewise.

For all my panels Autoscroll is true.

Whenever I am scrolling Panel1, Panel 2 or Panel 3, all controls added to the Panel are scrolled but only the combobox1 is not scrolling.

How to achieve this pls. ?

Any suggestion will be highly appreciated.

Thanks & Regards,
Sarada Swain