UpdateProgress control disappeared before the Page gets updated on ASP.net Web App

I have a small web application written in ASP.net 2.0 (works on 3.5 as well) with Ajax enabled. What it does is to search information on a online database and downloads as PDF.  I use <asp:UpdatePanel></asp:UpdatePanel> to wrap up the web form content, and use <asp:UpdateProgress> to show a modal popup type of progress icon during the actual download. It […]