Saving to Session onUnload

OK, I think I got it. The idea here is I want to save the scroll position of a DIV. I use a Session variable to store the scroll state because I expect the user to go to other pages and refresh the screen, when they come back I want to set the scroll back to where they left it.

In .aspx I place the following JavaScript functions:

PHP Code:

<script language="javascript">    function saveScrollState() {       scrollPx = ListManDataTable.scrollTop;    }    function restoreScrollState() {       ListManDataTable.scrollTop = scrollPx;    } </script>

Then I invoke them on the body tag's onLoad and onUnload

PHP Code:

<body bottomMargin="0" leftMargin="0" topMargin="0" rightMargin="0" onUnload="javascript:saveScrollState();" onLoad="javascript:restoreScrollState();">

I also use a hidden variable, scrollPx, referenced in the javascript functions:

PHP Code:

<form id="dataForm" method="post">    <input type="hidden" name="scrollPx" id="scrollPx" runat="server">

Also, let us not forget the <DIV> containing the repeater where we want our scroll state preserved:

PHP Code:

<div id="ListManDataTable" style="Z-INDEX:1; VISIBILITY:visible; OVERFLOW:auto; WIDTH:690px; POSITION:absolute; HEIGHT:360px">    <asp:Repeater ...>    </asp:Repeater> </div>

Now for the codebehind:

Code:

override protected void Page_Load( object sender, System.EventArgs e ) { string strJScript = "<SCRIPT LANGUAGE=javascript>\n"; strJScript += "hidScrollPx = " + Session["patListContentScrollPos"] + ";"; strJScript += "</SCRIPT>"; Page.RegisterClientScriptBlock("XYZ", strJScript); } override protected void Page_Unload() { Session["patListContentScrollPos"] = hidScrollPx; }

Also added the property:

Code:

protected int hidScrollPx;

I think that will do it. (Might need to clean up the JavaScript references a little though).