I have 5 update panels on my page (some are conditional and some are updated always). I have triggers for some of the updatepanels. I have a modalpop up progress indicator too... Everything works fine for the initial 5 - 9 asynchronous postbacks. Few update panels dont update when a button is clicked on the site. After the button is clicked, the web application queries data from DB and displays the same in Infragistics UltraWebGrid which is placed in a UpdatePanel. Once the data is populated, then most of the update panels dont work. They just dont trigger when controls are clicked. I am not sure whether this is a problem with the UltraWebGrid or UpdatePanels. Any solution for this??

Sorry, haven't used UtraWebGrid before, but have used multiple UpdatePanels on one page and they work fine.

Based on the information you have given it would be hard to give a solution. Try putting breakpoints in your code and run in debug mode to figure out where the call is stoping.

Update to my previous post. I have made the following changes to my page.

</asp:ScriptManager>

And now, after loading the data into the UltraWebgrid, when I click on buttons/change drop down values (all triggering events). I get a alert saying error. I dont understand where I am going wrong. Thanks for your time.