New Post: dictionary returns undefined

engine.Add("_GET", Get.Create(p));

 public static PropertyBag Create(HttpProcessor p)
        {
            var props = new PropertyBag();

            var uri = new Uri("htt://localhost" + p.http_url);
            var q = uri.Query;
            foreach (var qi in q.Split(new[] { '&', '?' }, StringSplitOptions.RemoveEmptyEntries))
            {
                var s = qi.Split('=');
                props.Add(s[0], s[1]);
            }

            return props;
        }