authorize code

[maxdiable]

hi, i used: var authRequestUrl = client.Core.OAuth2.Authorize("code");

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(authRequestUrl);
        request.ContentType = "text/json";
        request.Method = "GET";
        request.AllowAutoRedirect = true;
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();

but the request not return code

any Help?