Listbox Scrolling to Top on autopostback

Question

Why does asp.net listbox always scroll to top upon selecting an item when autopostback is on? How can I prevent this from happening?

Answer 1

I added the following jquery in javascript to fix the issue. I cannot remember where I found the solution but here it is. Just add the location of your target control - $get('YourDiv_YourPanel').

<script type="text/javascript">
    //Maintain scroll position in given element or control
    var xInputPanel, yInputPanel;
    var xProductPanel, yProductPanel;
    var prm = Sys.WebForms.PageRequestManager.getInstance();
    prm.add_beginRequest(BeginRequestHandler);
    prm.add_endRequest(EndRequestHandler);
    function BeginRequestHandler(sender, args) {
        yInputPanel = $get('MainContent_InputPanel').scrollTop;
        yProductPanel = $get('MainContent_ProductPanel').scrollTop;
    }
    function EndRequestHandler(sender, args) {
        $get('MainContent_InputPanel').scrollTop = yInputPanel;
        $get('MainContent_ProductPanel').scrollTop = yProductPanel;
    }
</script>