Solving the problem of position reset of div scroll bar after asp.net return

  This article mainly introduces the problem of resolving the position reset of div scroll bar after asp.net return, the central idea is to save the current Scorll value with a hidden control. Return the value based on the scrolltop, then reset the scrolltop  in Page_Load;

The first is to add a onscroll= "Javascript:setscolltop ()" Method for the DIV (not necessarily the div other tag mentality should be the same)   code as follows: <div style= "overflow: Auto height:152px "align=" left "id=" Dvscoll_1 "  onscroll=" Javascript:setscolltop () "> Www.jb51.net ... </div >     Here the Setscrolltop method is to assign the scrolltop value of a div to a hidden control each time the scroll bar scrolls. Code as follows   code as follows: function Setscolltop ()   {     document.getelementbyid ("<%= Hidscrolltop.clientid%> "). Value=document.getelementbyid (" Dvscoll_1 "). scrolltop;  }     because each. NET postback scroll bar is reset, we have scrolltop the div in Page_Load. The code is as follows     code as follows: if (! IsPostBack)                 {              &NB Sp     .....                                 Else &NB Sp               {                    /recoveryScroll bar position                     if (this.hidscrolltop.value!= "")                     {                        String scrolltop = This.hidScrollTop.Value;                         string strscript= "Document.getelementb Yid (' Dvscoll_1 '). scrolltop= "+scrolltop;                         Registerscriptblock (this. Page, Strscript);                                   & nbsp }     The Registerscriptblock here is a method I write in a common class library, as shown below.     Code as follows:  ///<summary>    ///registration script block    ///</summary>     Pub Lic static void Registerscriptblock (System.Web.UI.Page Page, string _scriptstring)    {        page. Clientscript.registerstartupscript (page. GetType (), "Scriptblock", "<script type= ' Text/javascript ' >" + _scriptstring + "</script>");    }