Hi!
I am using Visual Studio.NET 2003 (C#) .

I have a page (say parent page) which has a button(Button1). When the user clicks on

'Button1', a popup screen(child page1) pops up. This child page has a lot of controls. When

the user clicks on one of the buttons on this child page , the childpage1 closes and the

values entered in child page are displayed on the parentpage controls. I have implemented

this using showModalDialog() , __doPostBack() (for the button Button1) and

Page.GetPostBackEventReference(Button1 ,string.Empty).

The part mentioned above is working absolutely fine.

Now, on the same parent page, I have one more button (Button2), which when clicked also

opens another pop up page(child page2). In this child page2, I have drop downlist & listbox.

The dropdownlist has autopostback (= true) which fills up the listbox.

 My problem is that, it doesn't fill up the listbox. I have run the debugger within the

code-behind , and found that , the items get filled in the listbox but it never shows on

the screen.

I have implemented this page also with the above mentioned method. I don't understand what

the reason is.

Can anybody please suggest.

Thanks and regards,

ap.

I'm also having the same problem and am happy to hear I am not alone! I have 1 popup window which contains an unpopulated listbox and some textboxes. I had the initial problem of the popup window caching its textboxes when the popup was used subsequent times but fixed this with asp.net cache clearing solution.

New problem, I have a button on the popup window which when clicked tries to add something to the listbox. I can watch the event in debugging and see the string successfully add to the listbox, however when the page is returned to the browser the listbox does not contain the added string.

If the Listbox.Items.Add("this") is in Page_Load then it only successfully adds to the listbox when Page.IsPostBack is false. The problem seems to be related to caching again but I am already clearing the cache. I have also set IE to always get the latest version of a web page. I have also tried using IFRAME as suggested here http://msdn.microsoft.com/msdnmag/is...5/CuttingEdge/ but that didn't work.