ASP.NET

protected void Page_Load(object sender, EventArgs e)
       {
           double est_ship = 100.00;
           //try to load the cart from session memory. hit empty cart functions if not found / empty
           try
           {
               DataTable dt1 = (DataTable)Session["myCart"];
               if (dt1.Rows.Count > 0)
               {
                   itemsGrid.DataSource = dt1;
                   itemsGrid.DataBind();
                   double subt = 0.0;
                   foreach (System.Data.DataRow row in dt1.Rows)
                   {
                       subt += Convert.ToDouble(row["LineTotal"]);
                   }
                   double tax = (subt * 0.06);
                   sub_total_lbl.Text = subt.ToString("c");
                   tax_lbl.Text = tax.ToString("c");
                   est_ship_lbl.Text = est_ship.ToString("c");
                   total_lbl.Text = (subt + tax + est_ship).ToString("c");
                   make_order_btn.Enabled = true;
               }
               else
               {
                   emptyCart();
               }
           }
           catch (NullReferenceException)
           {
               emptyCart();
           }

protected void itemsGrid_RowDeleting(object sender, GridViewDeleteEventArgs e)
       {
           DataTable dt1 = (DataTable)Session["myCart"];
           dt1.Rows.Remove(dt1.Rows[e.RowIndex]);
       }