New Post: A) Authorize "to use your account?" keep appearing and B) How to get user infos

Hi everyone,

I need to create a simple "Log in" with Twitter account and I have the following problems:

• A) Authorize "to use your account?" keep appearing - steps are:
  1 - Create a Twitter account -> Create an new App -> Permission: "Read only" and select checkbox "Allow this application to be used to Sign in with Twitter"
  2 - From my page /TwitterLogin.aspx -> https://api.twitter.com/oauth/authorize?oauth_token={TOKEN} -> After I click accept "Authorize "<APP_NAME>" to use your account?" then I'm redirected to callback page -> /TwitterCallbak.aspx get the "oauth_token" and "oauth_verifier"
  3 - So at this point I've approve that app to use my twitter account. If I repeat the process - access /TwitterLogin.aspx the app request to be approved again and again.
  

Code for /TwitterLogin.aspx

protected void Page_Load(object sender, EventArgs e)
        {
            var applicationCredentials = CredentialsCreator.GenerateApplicationCredentials("<My_ConsumerKey>", "<My_ConsumerSecret>");
            string url = CredentialsCreator.GetAuthorizationURLForCallback(applicationCredentials, string.Format("{0}/SocialLogin/TwitterCallbak.aspx", Utils.GetSiteRootUrl()));

            //Saving applicationCredentials into session for using them later.
            Session["AUTH-KEY"] = applicationCredentials.AuthorizationKey;
            Session["AUTH-SECRET"] = applicationCredentials.AuthorizationSecret;

            Response.Redirect(url);
        }

Code for /TwitterCallbak.aspx

protected void Page_Load(object sender, EventArgs e)
{
    //OAuth Tokens
    string OAuthTokenCode = Utils.Get<string>("oauth_token", string.Empty);
    string OAuthVerifierCode = Utils.Get<string>("oauth_verifier", string.Empty);

    if (!string.IsNullOrEmpty(OAuthTokenCode) && !string.IsNullOrEmpty(OAuthVerifierCode))
    {
        var applicationCredentials = CredentialsCreator.GenerateApplicationCredentials("<My_ConsumerKey>", "<My_ConsumerSecret>");

        //Setting applicationCredentials to the previous one i saved in sessions.
        applicationCredentials.AuthorizationKey = Session["AUTH-KEY"].ToString();
        applicationCredentials.AuthorizationSecret = Session["AUTH-SECRET"].ToString();

        // Here we provide the entire URL where the user has been redirected
        try
        {
            var newCredentials = CredentialsCreator.GetCredentialsFromVerifierCode(OAuthVerifierCode, applicationCredentials);
            if (newCredentials != null)
            {
                //use your credentials here newCredentials.AccessToken, newCredentials.AccessTokenSecret
                string AccessToken = newCredentials.AccessToken;
                string AccessTokenSecret = newCredentials.AccessTokenSecret;

                TwitterCredentials.SetCredentials(AccessToken, AccessTokenSecret, "<My_ConsumerKey>", "<My_ConsumerSecret>");                        
                var user = Tweetinvi.User.GetLoggedUser();

                //log success
            }
        }
        catch (Exception ex)
        {
            //log error
        }

        return;
    }

    //CANCEL/DENY APP REQUEST
    string UserDenyCode = Utils.Get<string>("denied", string.Empty);

    if (!string.IsNullOrEmpty(UserDenyCode))
    {
        //log error
        return;
    }
}

After some research I found out that there are two URLs used in auth process:

https://api.twitter.com/oauth/authenticate?oauth_token={TOKEN}
https://api.twitter.com/oauth/authorize?oauth_token={TOKEN}

so I've saw that /TwitterLogin.aspx generate a url like this one

https://api.twitter.com/oauth/authorize?oauth_token={TOKEN}

and to resolve the problem in /TwitterLogin.aspx I've replace the line

string url = CredentialsCreator.GetAuthorizationURLForCallback(applicationCredentials, string.Format("{0}/SocialLogin/TwitterCallbak.aspx", Utils.GetSiteRootUrl()));

with

string url = CredentialsCreator.GetAuthorizationURLForCallback(applicationCredentials, string.Format("{0}/SocialLogin/TwitterCallbak.aspx", Utils.GetSiteRootUrl())).Replace("authorize", "authenticate");

And now the problem seams to go away, but the question is there another way to do this and I miss it ?

And B) How to get user infos, in /TwitterCallbak.aspx the line

var user = Tweetinvi.User.GetLoggedUser();

return all properties with NULL values, so how can I get Twitter Username, ScreenName, Profile Image please ?

Cheers