BiliRanking.Core.BiliApiHelper.LoginBilibili C# (CSharp) Method

        public static async Task<string> LoginBilibili(string UserName, string Password)
        {
            try
            {
                //发送第一次请求，得到access_key
                WebClient wc = new WebClient();
                string url = "https://api.bilibili.com/login?appkey=422fd9d7289a1dd9&platform=wp&pwd=" + WebUtility.UrlEncode(Password) + "&type=json&userid=" + WebUtility.UrlEncode(UserName);
                //url += "&sign=" + BiliApiHelper.GetSign(url);

                string results = await wc.DownloadStringTaskAsync(new Uri(url));
                //Json解析及数据判断
                LoginModel model = new LoginModel();
                model = JsonConvert.DeserializeObject<LoginModel>(results);
                if (model.code == -627)
                {
                    return "登录失败，密码错误！";
                }
                if (model.code == -626)
                {
                    return "登录失败，账号不存在！";
                }
                if (model.code == -625)
                {
                    return "密码错误多次";
                }
                if (model.code == -628)
                {
                    return "未知错误";
                }
                if (model.code == -1)
                {
                    return "登录失败，程序注册失败！请联系作者！";
                }
                HttpClient hc = new HttpClient();
                if (model.code == 0)
                {
                    access_key = model.access_key;
                    return model.access_key;
                    /*
                    
                    Windows.Web.Http.HttpResponseMessage hr2 = await hc.GetAsync(new Uri("http://api.bilibili.com/login/sso?&access_key=" + model.access_key + "&appkey=422fd9d7289a1dd9&platform=wp"));
                    hr2.EnsureSuccessStatusCode();
                    StorageFolder folder = ApplicationData.Current.LocalFolder;
                    StorageFile file = await folder.CreateFileAsync("us.bili", CreationCollisionOption.OpenIfExists);
                    await FileIO.WriteTextAsync(file, model.access_key);
                    */
                }

                return "err";
                //看看存不存在Cookie
                //TODO: 读取cookie http://www.cnblogs.com/suger/p/3359146.html
                /*
                hb = new HttpBaseProtocolFilter();
                HttpCookieCollection cookieCollection = hb.CookieManager.GetCookies(new Uri("http://bilibili.com/"));

                List<string> ls = new List<string>();
                foreach (HttpCookie item in cookieCollection)
                {
                    ls.Add(item.Name);
                }
                if (ls.Contains("DedeUserID"))
                {
                    return "登录成功";
                }
                else
                {
                    return "登录失败";
                }
                */
            }
            catch (Exception ex)
            {
                if (ex.HResult == -2147012867)
                {
                    return "登录失败，检查你的网络连接！";
                }
                else
                {
                    return "登录发生错误";
                }

            }
        }