Maintain scroller position on Div after page postback (ASP.NET)

Question

I have a div as such:

I contains a few hundred records and allows me to select an i

Answer 1

Tried all of the above and none of them worked satisfactorily in chrome v39, however the method used on this page worked marvellously:

Maintain Scroll Position of DIV on PostBack in ASP.Net

Answer 2

Disclaimer - not my code, but I've seen this used before:

window.onload = function(){
    var strCook = document.cookie;
    if(strCook.indexOf("!~")!=0){
      var intS = strCook.indexOf("!~");
      var intE = strCook.indexOf("~!");
      var strPos = strCook.substring(intS+2,intE);

      document.getElementById("divTest").scrollTop = strPos;
      document.getElementById("divTest").scrollTop = strPos;
    }
  }
  function SetDivPosition(){
    var intY = document.getElementById("divTest").scrollTop;

    document.cookie = "yPos=!~" + intY + "~!";
  }

The idea is to store the position of the scrollbar in a cookie. Another (better?) option would be to store it in a hidden field (or fields). Hope that gets you going...

Answer 3

Replace thebody with document.getElementById("divTest")

If you worry that the onscroll event does not work in opera/ff, you can try changing

thebody.onscroll=SaveScrollLocation;

to

setInterval('SaveScrollLocation()", 500);

Answer 4

Here is a more refined way of FlySwat's solution using JQuery which worked for me:

    var $ScrollPosition = $('#hfScrollPosition');
    var $ScrollingDiv = $('#pnlGroupDataContent');
    if ($ScrollPosition.length && $ScrollingDiv.length) {
        // Store scrolling value
        $ScrollingDiv.scroll(function () {
            $ScrollPosition.val($ScrollingDiv.scrollTop());
        });
        // Set scrolling
        $ScrollingDiv.scrollTop($ScrollPosition.val());
    }

Answer 5

Place something like:

 <asp:HiddenField id="hdnScrollPos" runat="server"/> in your aspx.

Then, some javascript like:

var hdnScroll = document.getElementById(<%=hdnScrollPos.ClientID%>);
var bigDiv = document.getElementById('bigDiv');
bigDiv.onscroll = function() {
     hdnScroll.value = bigDiv.scrollTop;
}

window.onload = function () { 
    bigDiv.scrollTop = hdnScroll.value;
}

Answer 6

ASP.NET has this built in all you need to do is include the MaintainScrollPositionOnPostback in your page directive.

<%@ Page Language="C#" MaintainScrollPositionOnPostback="true" %>