Maintain Scroll Position after Asynchronous Postback

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Normally, if the updatepanel posts back, the item will scroll back to the top because it has been reloaded. What you need to do is “remember” where the item was scrolled to and jump back to there after the postback.writting the following script after the ScriptManager on page. And since the _endRequest event of the PageRequestManager happens before the page is rendered, you’ll never even see your item move but the update panel having the timer is not working the timer dosnt get started or updated

can anyone provide the solution for it

<script type="text/javascript">
var xPos, yPos;
var prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_beginRequest(BeginRequestHandler);
prm.add_endRequest(EndRequestHandler);
function BeginRequestHandler(sender, args) {
xPos = $get('scrollDiv').scrollLeft;
yPos = $get('scrollDiv').scrollTop;
}
function EndRequestHandler(sender, args) {
$get('scrollDiv').scrollLeft = xPos;
$get('scrollDiv').scrollTop = yPos;
}
</script>

Plz get some needfull solution fot the same.

Posted 12-Oct-13 0:13am

durgesh j

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durgesh j · Accepted Answer · 2013-10-16T20:48:00

<form id="form1" runat="server">
<asp:scriptmanager id="ScriptManager1" runat="server" scriptmode="Release" xmlns:asp="#unknown">
<script type="text/javascript">
// It is important to place this JavaScript code after ScriptManager1
var xPos, yPos;
var prm = Sys.WebForms.PageRequestManager.getInstance();

function BeginRequestHandler(sender, args) {
if ($get('<%=Panel1.ClientID%>') != null) {
// Get X and Y positions of scrollbar before the partial postback
xPos = $get('<%=Panel1.ClientID%>').scrollLeft;
yPos = $get('<%=Panel1.ClientID%>').scrollTop;
}
}

function EndRequestHandler(sender, args) {
if ($get('<%=Panel1.ClientID%>') != null) {
// Set X and Y positions back to the scrollbar
// after partial postback
$get('<%=Panel1.ClientID%>').scrollLeft = xPos;
$get('<%=Panel1.ClientID%>').scrollTop = yPos;
}
}

prm.add_beginRequest(BeginRequestHandler);
prm.add_endRequest(EndRequestHandler);
</script>

<asp:updatepanel id="UpdatePanel1" runat="server" xmlns:asp="#unknown">
<contenttemplate>
<asp:panel id="Panel1" runat="server" height="300">
<%-- Some stuff which would cause a partial postback goes here --%>

</form>