So in my last post I was asking how to build a tree in memory and use it without going back to DB again and again. I just took the whole table in memory used by that table is going to be low and well the requirement I was told was such that I had to use in-memory structure.
Anyway now I am trying to improve the code by removing the postback calls. I am not sure if I am doing this right so please help me out here. I have put a listbox control on the page and enabled AutoPostBack for that control. Now what I would ideally like to do is use Ajax and just update the contents of the listbox with the new contents as soon as the item is selected in the listbox. Right now with every click the control posts back the page and retrieves the info from memory. Is there any more efficient way to refresh the data in the listbox using ajax ? Thanks - SM
