protected void Page_Load(object sender, EventArgs e)
        {
            if (Session["Id"] != null)
            {
                List<Puja> lv = new List<Puja>();
                var javaScriptSerializer = new JavaScriptSerializer();
                string jsonVentas = "";
                int idVenta = Int32.Parse(Request["id"]);

                Ventas serv = new Ventas();
                serv.Url = new Juddi().getServiceUrl("Ventas");
                jsonVentas = serv.getPujasVenta(idVenta);
                lv = javaScriptSerializer.Deserialize<List<Puja>>(jsonVentas);

                DataTable dt = new DataTable();
                dt.Columns.AddRange(new DataColumn[4] {
                        new DataColumn("idventa", typeof(int)),
                                        new DataColumn("idpujador",typeof(int)),
                                        new DataColumn("cantidad", typeof(string)),
                                        new DataColumn("Vender",typeof(string))
                    });

                for (int i = 0; i < lv.Count; i++)
                {
                    dt.Rows.Add(lv[i].ventaId, lv[i].pujadorId, lv[i].cantidad, "Vender");
                }
                GridView1.DataSource = dt;
                GridView1.DataBind();
            }
            else
            {
                Response.Redirect("/");
            }
        }
        public void obtenerPujas(ItemPuja p)
        {
            List<Puja> lv = new List<Puja>();
            var javaScriptSerializer = new JavaScriptSerializer();
            string jsonPujas = "";

            Ventas serv = new Ventas();
            serv.Url = new Juddi().getServiceUrl("Ventas");
            jsonPujas = serv.getPujasVenta(p.id);
            lv = javaScriptSerializer.Deserialize<List<Puja>>(jsonPujas);
            for (int i = 0; i < lv.Count; i++)
            {
                lvPujas.Items.Add(new Puja { ventaId = lv[i].ventaId, pujadorId = lv[i].pujadorId, cantidad = lv[i].cantidad});
            }
        }