using (var webClient = new System.Net.WebClient())
        {
            string jsonString = webClient.DownloadString(string.Format(url));

            var lookup = JsonConvert.DeserializeObject<Dictionary<string, object>>(jsonString);


            if (lookup != null
                && lookup.Count >= 1
                && lookup["resultCount"] != null
                && Convert.ToInt32(lookup["resultCount"].ToString()) > 0)
            {

                var results = JsonConvert.DeserializeObject<List<object>>(lookup[@"results"].ToString());


                if (results != null && results.Count > 0)
                {
                    var values = JsonConvert.DeserializeObject<Dictionary<string, object>>(results[0].ToString());
                    appStoreAppVersion = values.ContainsKey("version") ? values["version"].ToString() : string.Empty;

                }
            }
        }

        return appStoreAppVersion;