I have a small problem with my ASP.NET web form. I have a dropdownlist that is populated using client-side JavaScript, and when the page does an auto postback the list items in the dropdownlist are cleared. Is there a way that I can somehow lock the list items? Thank you.

The javascript will have to run every time the page is drawn. Where is the javascript that is filling the DDL? You may need to figure out a way to call the "fill" javascript from the page that is refreshing. You'll need to take into account the currently selected item so you can reselect it otherwise the DDL will reset to the first item every time.