Start.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace TestGrounds
{
    public partial class Start : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Session["thankYou"] != null)
            {
                //Code here
                lblThankYou.Text = Session["thankYou"].ToString();
                lblThankYou.Visible = true;
                Session["thankYou"] = null;
            }
            if (Session["user"] == null)
            {
                Session["user"] = "guest";
            }
            if (Session["user"] != null)
            {
                lblLoggedUser.Text = "Welcome! " + Session["user"];
                lblLoggedUser.Visible = true;
            }

            lstMenuCart.Items.Clear();
            Order o = new Order();
            o = (Order)Session["Order"];
            if (o != null)
            {
                foreach (Pizza element in o.pizzas)
                {
                    lstMenuCart.Items.Add(element.name);
                }
            }
        }
    }
}