David-

I almost didn't see your reply since you replied to Çetin.

>Agreed. contractors.ContractorsList should go into session,

It is.

>not control.

Desperation (see my other reply to Çetin).

>Enableviewstate should be on for the dropdown control.

It was. I should have specified so, but I didn't want to bog down the post.

Have you used a dropdown in a similar circumstance on a webform? If so, how did you persist the list's values, if I may ask? TIA.