Write Code in aspx page - using directive - call asp.net method from design .aspx page

Add classes:

<%@ Page Language="C#" MasterPageFile="~/RT/RTMaster.master" AutoEventWireup="true"
    CodeFile="Welcome.aspx.cs" Inherits="RT_Welcome" Title="Super Recharge" %>

<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>


 <div id="Div1" style="margin-bottom: 10px;">
                    <marquee direction="Horizontal" scrolldelay="130" onmouseover="this.stop()" onmouseout="this.start()">
                    <% SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ERecharge"].ConnectionString); %>
                    <% SqlDataAdapter adap = new SqlDataAdapter("Select date,news from postnews Where PostId = 'RT' Order by date desc", con); %>
                    <% DataTable dt = new DataTable(); %>
                    <% adap.Fill(dt); %>
                    <% if (dt.Rows.Count > 0) %>
                    <%{ %>
                    <% foreach(DataRow dr in dt.Rows) %>
                    <% { %>
                    <span style="color:Red; font-size:larger; font-family:Sans-Serif;"><%= dr["news"].ToString()%> (on <%= dr["date"].ToString()%>) </span>
                     <%} %>
                     <%} %></marquee>
                </div>