LoginResult Login(1: string userName, 2: string password, 3: LoginSite loginSite); 

#region ILogin implementation
public LoginResult DoLogin(string UserName, string Password)
{
  throw new NotImplementedException();
}
public CookieContainer cookies { set; get;}
#endregion 

//1. Get the token.
string token_url = string.Format("https://passport.baidu.com/v2/api/?getapi&tpl=mn&apiver=v3&tt={0}&class=login&gid={1}&logintype=dialogLogin&callback=bd__cbs__{2}", TimeHelper.ConvertDateTimeInt(DateTime.Now), Guid.NewGuid().ToString().ToUpper(), build_callback());
string prepareContent = HttpHelper.GetHttpContent(token_url, null, cookies, referer: "https://www.baidu.com/", encode: Encoding.GetEncoding("GB2312"), cookiesDomain: "passport.baidu.com");
//string prepareJson = prepareContent.Split('(')[1].Split(')')[0];
dynamic prepareJson = JsonConvert.DeserializeObject(prepareContent.Split('(')[1].Split(')')[0]);
string token = prepareJson.data.token; 

//2. Get public key
string pubkey_url = "https://passport.baidu.com/v2/getpublickey?token={0}&tpl=mn&apiver=v3&tt={1}&gid={2}&callback=bd__cbs__{3}";
string pubkeyContent = HttpHelper.GetHttpContent(string.Format(pubkey_url, token, TimeHelper.ConvertDateTimeInt(DateTime.Now), Guid.NewGuid().ToString().ToUpper(), build_callback()), null, cookies, referer: "https://www.baidu.com/", encode: Encoding.GetEncoding("GB2312"), cookiesDomain: "passport.baidu.com");
dynamic pubkeyJson = JsonConvert.DeserializeObject(pubkeyContent.Split('(')[1].Split(')')[0]);
rsa_pub_baidu = pubkeyJson.pubkey;
string KEY = pubkeyJson.key; 

//3. Build post data
string login_data = "staticpage=https%3A%2F%2Fwww.baidu.com%2Fcache%2Fuser%2Fhtml%2Fv3Jump.html&charset=UTF-8&token={0}&tpl=mn&subpro=&apiver=v3&tt={1}&codestring=&safeflg=0&u=https%3A%2F%2Fwww.baidu.com%2F&isPhone=&detect=1&gid={2}&quick_user=0&logintype=dialogLogin&logLoginType=pc_loginDialog&idc=&loginmerge=true&splogin=rate&username={3}&password={4}&verifycode=&mem_pass=on&rsakey={5}&crypttype=12&ppui_logintime={6}&countrycode=&callback=parent.bd__pcbs__{7}";
login_data = string.Format(login_data, token, TimeHelper.ConvertDateTimeInt(DateTime.Now), Guid.NewGuid().ToString().ToUpper(), HttpUtility.UrlEncode(UserName), HttpUtility.UrlEncode(get_pwa_rsa(Password)), HttpUtility.UrlEncode(KEY), stopwatch.ElapsedMilliseconds, build_callback());
//4. Post the login data
string login_url = "https://passport.baidu.com/v2/api/?login";
HttpHelper.GetHttpContent(login_url, login_data, cookies, referer: "https://www.baidu.com/", cookiesDomain: "passport.baidu.com"); 

string home_url = "https://www.baidu.com";
string result = HttpHelper.GetHttpContent(home_url, cookies: cookies, cookiesDomain: "passport.baidu.com");
//5. Verifty the login result
if (string.IsNullOrWhiteSpace(result) || result.Contains("账号存在异常") || !result.Contains("bds.comm.user=\""))
{
  return new LoginResult() { Result = ResultType.AccounntLimit, Msg = "Fail, Msg: Login fail! Maybe you account is disable or captcha is needed." };
}

LoginResult loginResult = new LoginResult() { Result = ResultType.Success, Msg = "Success", Cookies = HttpHelper.GetAllCookies(cookies) }; 

case LoginSite.Baidu:
  LoginClass = new BaiduLogin ();
  break;