My pages worked fine, when they were located on the root of my project. When I moved them to folders, in preparation of doing roles/permissions, I had some issues that I worked through. Dropdownlists with AutoPostBack = "False" on the page work fine. But, I cannot seem to get past an issue with a dropdownlist that does a postback. I am getting an error: Sys.Webforms.PageRequestManagerServerErrorException. The status code returned from the server was: 404. I think the problem is related to AutoPostBack and UpdatePanel, but I don't know how to fix it. If someone could point me in the right direction, I would appreciate the assistance.

I read that IE7 took care of this problem and since I had IE6 on my machine it was worth a try and it worked. IE7 took care of the dropdownlists disappearing! Thank you for your replies. Linda

I am new to ASP.Net 2.0 using VB. When the ModalPopup is shown, the DropDownLists disappear. Why? When these objects are on an UpdatePanel or not, they act the same way. There are several DropDownLists on my page. Each DropDownList populates the next. One of the DropDownLists is to show a ModalPopup with the description of the selected item. When the ModalPopup is shown, the DropDownLists disappear. When the ModalPopup is closed by the user, the DropDownLists reappear, but it takes several clicks to get the dropdownlists back in sync. This is unacceptable. If someone has had the same problem, I would appreciate hearing how you handled this. Thanks, Linda

modified on Sunday, August 17, 2008 8:24 PM