In ASP.NET, after PagePostBack is done, to maintain the scroll position can be quite important in long web pages. ASP.NET gives us 3 methods to do this. They are:

       1. In Web.config :

               <pages maintainScrollPositionOnPostBack="true">

       2. In single Page :

              <%@ Page MaintainScrollPositionOnPostback="true" ...

       3. Programatically :

              Page.MaintainScrollPositionOnPostBack = true;