How do i view mentions using API and c#


#1

how to view the post that mentions us by using c# and this API. I had write some code. then it give this error:
The remote server returned an error: (401) Unauthorized.
i dont understand why this is happen and how do i need to do to solve this issue. this is my code:

 protected void getMentionV1(string resource_url, string q)
    {

        resource_url = https://api.twitter.com/1.1/statuses/mentions_timeline.json
        // oauth application keys
        var oauth_token = accessToken; 
        var oauth_token_secret = accessTokenSecret; 
        var oauth_consumer_key = consumerKey;// = 
        var oauth_consumer_secret = consumerSecret;

        // oauth implementation details
        var oauth_version = "1.0";
        var oauth_signature_method = "HMAC-SHA1";

        // unique request details
        var oauth_nonce = Convert.ToBase64String(new ASCIIEncoding().GetBytes(DateTime.Now.Ticks.ToString()));
        var timeSpan = DateTime.UtcNow
            - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
        var oauth_timestamp = Convert.ToInt64(timeSpan.TotalSeconds).ToString();


        // create oauth signature
        var baseFormat = "oauth_consumer_key={0}&oauth_nonce={1}&oauth_signature_method={2}" +
                        "&oauth_timestamp={3}&oauth_token={4}&oauth_version={5}&q={6}";

        var baseString = string.Format(baseFormat,
                                    oauth_consumer_key,
                                    oauth_nonce,
                                    oauth_signature_method,
                                    oauth_timestamp,
                                    oauth_token,
                                    oauth_version,
                                    Uri.EscapeDataString(q)
                                    );

        baseString = string.Concat("GET&", Uri.EscapeDataString(resource_url), "&", Uri.EscapeDataString(baseString));
        
        var compositeKey = string.Concat(Uri.EscapeDataString(oauth_consumer_secret),
                                "&", Uri.EscapeDataString(oauth_token_secret));

        string oauth_signature;
        using (HMACSHA1 hasher = new HMACSHA1(ASCIIEncoding.ASCII.GetBytes(compositeKey)))
        {
            oauth_signature = Convert.ToBase64String(
                hasher.ComputeHash(ASCIIEncoding.ASCII.GetBytes(baseString)));
        }

        // create the request header
        var headerFormat = "OAuth oauth_nonce=\"{0}\", oauth_signature_method=\"{1}\", " +
                           "oauth_timestamp=\"{2}\", oauth_consumer_key=\"{3}\", " +
                           "oauth_token=\"{4}\", oauth_signature=\"{5}\", " +
                           "oauth_version=\"{6}\"";

        var authHeader = string.Format(headerFormat,
                                Uri.EscapeDataString(oauth_nonce),
                                Uri.EscapeDataString(oauth_signature_method),
                                Uri.EscapeDataString(oauth_timestamp),
                                Uri.EscapeDataString(oauth_consumer_key),
                                Uri.EscapeDataString(oauth_token),
                                Uri.EscapeDataString(oauth_signature),
                                Uri.EscapeDataString(oauth_version)
                        );

        ServicePointManager.Expect100Continue = false;

        var postBody = "screen_name=" + Uri.EscapeDataString(q);//
        resource_url += "?" + postBody;

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(resource_url);
        request.Headers.Add("Authorization", authHeader);
        request.Method = "GET";
        request.ContentType = "application/x-www-form-urlencoded";
        var response = (HttpWebResponse)request.GetResponse();
        var reader = new StreamReader(response.GetResponseStream());
        var objText = reader.ReadToEnd();

        gvTweet.DataSource = reader.ReadToEnd();
        gvTweet.DataBind();
        string html = "";
        try
        {
            JArray jsonDat = JArray.Parse(objText);
            for (int x = 0; x < jsonDat.Count(); x++)
            {

                html += jsonDat[x]["id"].ToString() + "<br/>";
                html += jsonDat[x]["text"].ToString() + "<br/>";
                html += jsonDat[x]["created_at"].ToString() + "<br/><hr/>";


            }
            mydiv.InnerHtml = html;
        }
        catch (Exception twit_error)
        {
            mydiv.InnerHtml = html + twit_error.ToString();
        }

    }

Please help me. Thanks in advance


#2

Probably a silly question, but you’re actually putting the OAuth tokens and keys in the code too right?