var url https trdata com isin2id php secret_code h2uWACMDGrzWjZZSreOZ

var url = "https://trdata.com/isin2id.php?secret_code=h2uWACMDGrzWjZZSreOZyqj81YLzp1ug&isin=" + isin;
            _webClient.OpenReadAsync(new Uri(url), UriKind.Absolute);