dynamic controls in VB.net

Hello,

I have created a few dynamic controls in vb.net which work fine. But now I
would like to reference to those controls. How can I do that.

For example I have created a dropdownlist.1d = 13. How can I do a do a
response.write or a msgbox using that control? It obviously does not exist
when trying to refer to it in design mode.

Would appreciate any help on this.

Thanks

Anil