Attassa.OAuthLinkedIn.oAuthWebRequest C# (CSharp) Method

        public string oAuthWebRequest(Method method, string url, string postData)
        {
            string outUrl = "";
            string querystring = "";
            string ret = "";

            //Setup postData for signing.
            //Add the postData to the querystring.
            if (method == Method.POST)
            {
                if (postData.Length > 0)
                {
                    //Decode the parameters and re-encode using the oAuth UrlEncode method.
                    NameValueCollection qs = HttpUtility.ParseQueryString(postData);
                    postData = "";
                    foreach (string key in qs.AllKeys)
                    {
                        if (postData.Length > 0)
                        {
                            postData += "&";
                        }
                        qs[key] = HttpUtility.UrlDecode(qs[key]);
                        qs[key] = this.UrlEncode(qs[key]);
                        postData += key + "=" + qs[key];

                    }
                    if (url.IndexOf("?") > 0)
                    {
                        url += "&";
                    }
                    else
                    {
                        url += "?";
                    }
                    url += postData;
                }
            }

            Uri uri = new Uri(url);

            string nonce = this.GenerateNonce();
            string timeStamp = this.GenerateTimeStamp();

            string callback = "";
            if (url.ToString().Contains(REQUEST_TOKEN))
                callback = CALLBACK;

            //Generate Signature
            string sig = this.GenerateSignature(uri,
                this.ConsumerKey,
                this.ConsumerSecret,
                this.Token,
                this.TokenSecret,
                method.ToString(),
                timeStamp,
                nonce,
                callback,
                out outUrl,
                out querystring);

            querystring += "&oauth_signature=" + HttpUtility.UrlEncode(sig);

            //Convert the querystring to postData
            if (method == Method.POST)
            {
                postData = querystring;
                querystring = "";
            }

            if (querystring.Length > 0)
            {
                outUrl += "?";
            }

            if (method == Method.POST || method == Method.GET)
                ret = WebRequest(method, outUrl + querystring, postData);

            return ret;
        }