public static string GetData(string name)
        {
            IdentityContract id = new IdentityContract();

            id.Name  = "Tim";
            id.Price = 123.45;

            string json = JsonConvert.SerializeObject(id);

            return(json);
        }
        // https://192.168.8.99/JsonResonse.aspx?p1=a1&p2=a2

        protected void Page_Load(object sender, EventArgs e)
        {
            string p1 = Request.QueryString.Get("p1");
            string p2 = Request.QueryString.Get("p2");

            Response.AddHeader("p1", p1);
            Response.AddHeader("p2", p2);

            IdentityContract id = new IdentityContract();

            id.Name  = "Tim";
            id.Price = 123.45;

            string json = JsonConvert.SerializeObject(id);

            Response.Clear();
            Response.CacheControl = "no-cache";
            //Response.ContentType = "text/xml";
            Response.ContentType = "application/json; charset=utf-8";
            Response.Write(json);
            Response.End();
        }