请问一个DataGrid,没有分页，有下拉滚动条,无分页，点击某项时，能记住其位置

请问一个DataGrid,没有分页，有下拉条(用DIV做的),无分页，点击某项页面刷新后，DataGrid能记住其滚动条位置使其仍能滚动到刷新前的位置

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<div id="Layer1" style="position:absolute; width:700px; height:500; z-index:4; layer-background-color: #999999; border: 1px none #000000; overflow-x: scroll;">
<asp:datagrid ...../>
</div>
overflow：scroll      为横纵都有滚动条；
overflow-x：scroll    为横滚动条；
overflow-y：scroll    为纵滚动条；
我收藏的，没有实践过
1、在aspx页面为body添加id属性：<body id="thebody" MS_POSITIONING="GridLayout">
2、后台代码（.cs文件）中引用：using System.Text;
3、添加方法：
#region "防止页面滚动"
private void RetainScrollPosition()
{
StringBuilder saveScrollPosition = new StringBuilder ();
StringBuilder setScrollPosition = new StringBuilder (); RegisterHiddenField("__SCROLLPOS", "0"); saveScrollPosition.Append("<script language='javascript'>");
saveScrollPosition.Append("function saveScrollPosition() {");
saveScrollPosition.Append("    document.forms[0].__SCROLLPOS.value = thebody.scrollTop;");
saveScrollPosition.Append("}");
saveScrollPosition.Append("thebody.onscroll=saveScrollPosition;");
saveScrollPosition.Append("</script>"); RegisterStartupScript("saveScroll", saveScrollPosition.ToString()); if (Page.IsPostBack)
{
     setScrollPosition.Append("<script language='javascript'>");
  setScrollPosition.Append("function setScrollPosition() {");
  setScrollPosition.Append("    thebody.scrollTop = " + Request["__SCROLLPOS"] + ";");
  setScrollPosition.Append("}");
  setScrollPosition.Append("thebody.onload=setScrollPosition;");
  setScrollPosition.Append("</script>");  RegisterStartupScript("setScroll", setScrollPosition.ToString());
   }
  }
#endregion4、在page_load中?用此方法：
    this.RetainScrollPosition();
楼上的，好象是页面的滚动条，我想要一个在页面中的<DIV>的
记住页面的位置与层的位置，具体方法如下：
/// <summary>
/// 保存div与页面滚动条的位置
/// 『创建者：小朱【[email protected]】
/// 创建日期：2004-12-07 15:40
/// 修改日期：2004-12-08 16:24
/// 修改人：朱书彦【[email protected]】
/// 修改原因：传入数组参数，任何具有滚动条的对象』
/// </summary>
/// <param name="divId">DIV的ID数组</param>
public static void RetainScrollPosition(string[] divId)
{

System.Web.UI.Page page=(Page)HttpContext.Current.Handler; string saveScrollPosition = "";
string setScrollPosition = "";
string saveScrollPositionDiv = "";
string setScrollPositionDiv = "";
         #region 保存页面滚动条的状态
page.RegisterHiddenField("__SCROLLPOS_TOP","0");
page.RegisterHiddenField("__SCROLLPOS_LEFT","0");
saveScrollPosition = "document.forms[0].__SCROLLPOS_TOP.value = {0}.scrollTop;document.forms[0].__SCROLLPOS_LEFT.value = {0}.scrollLeft;";//}{0}.onscroll=saveScrollPosition;</script>";
setScrollPosition = "{0}.scrollTop ='{1}';{0}.scrollLeft ='{2}';";//}{0}.onload=setScrollPosition;</script>";

saveScrollPosition = string.Format(saveScrollPosition,"window.document.body");
setScrollPosition = string.Format(setScrollPosition,"window.document.body", page.Request.Form["__SCROLLPOS_TOP"],page.Request.Form["__SCROLLPOS_LEFT"]);
#endregion #region 保存divId的位置
for (int i = 0; i < divId.Length; i++)
{
page.RegisterHiddenField(divId[i].ToString() + "_TOP","0");
page.RegisterHiddenField(divId[i].ToString() + "_LEFT","0");

saveScrollPositionDiv = "<script language='javascript'>function saveScrollPosition" + divId[i].ToString() + "() {{document.all('" + divId[i].ToString() + "_TOP').value = {0}.scrollTop;document.all('" + divId[i].ToString() + "_LEFT').value = {0}.scrollLeft;}}{0}.onscroll=saveScrollPosition" + divId[i].ToString() + ";</script>";
setScrollPositionDiv += "{0}.scrollTop = {1};{0}.scrollLeft = {2};"; saveScrollPositionDiv = string.Format(saveScrollPositionDiv,"window.document.all('" + divId[i].ToString() + "')");
page.RegisterStartupScript("saveScroll" + divId[i].ToString(), saveScrollPositionDiv); setScrollPositionDiv = string.Format(setScrollPositionDiv,"window.document.all('" + divId[i].ToString() + "')", page.Request.Form[divId[i].ToString() + "_TOP"],page.Request.Form[divId[i].ToString() + "_LEFT"]);
}
#endregion

#region 注册客户端脚本
saveScrollPosition = "<script language='javascript'>function saveScrollPosition() {{" + saveScrollPosition + "}}{0}.onscroll=saveScrollPosition;</script>";
page.RegisterStartupScript("saveScroll", string.Format(saveScrollPosition,"window.document.body")); if(page.IsPostBack)
{
      setScrollPosition = "<script language='javascript'>function setScrollPosition() {{" + setScrollPosition + setScrollPositionDiv + "}}{0}.onload=setScrollPosition;</script>";
      page.RegisterStartupScript("setScroll", string.Format(setScrollPosition,"window.document.body"));
//page.RegisterStartupScript("setScrollDocument", string.Format(setScrollPosition,"window.document.body", page.Request.Form["__SCROLLPOS_TOP"],page.Request.Form["__SCROLLPOS_LEFT"]));
}
#endregion

}使用方法要放在Page.IsPostBack之外。
<script language="javascript">
function GetCookie (name)
{
   var arg = name + "=";
   var alen = arg.length;
   var clen = document.cookie.length;
   var i = 0;
   while (i < clen)
   {
       var j = i + alen;
       if (document.cookie.substring(i, j) == arg)
       return getCookieVal (j);
       i = document.cookie.indexOf(" ", i) + 1;
       if (i == 0) break;
   }
return null;
}function getCookieVal (offset)
{
   var endstr = document.cookie.indexOf (";", offset);
   if (endstr == -1)
     endstr = document.cookie.length;
     return unescape(document.cookie.substring(offset, endstr));
   }
function SetCookie (name, value)
   {
     document.cookie = name + "=" + escape (value)
   }
</script>在body中加入
<body bgColor="#f1f5f5" leftMargin="0" topMargin="0" rightMargin="0" MS_POSITIONING="GridLayout" onload="document.body.scrollTop=GetCookie('posy')" onunload="SetCookie('posy',document.body.scrollTop)">
http://expert.csdn.net/Expert/topic/2991/2991206.xml?temp=.9256098
Keeping Scroll Position over post Backs:
http://aspalliance.com/articleViewer.aspx?aId=356&pId=1
http://dotnet.aspx.cc/ShowDetail.aspx?id=0C25068E-55EA-4124-8CD6-726ECF5D5D3B
http://expert.csdn.net/Expert/topic/2747/2747150.xml?temp=.1869013
smartnavigation = true
有一些第三方的grid控件的，楼主可以找一下！