oAuth TokenSecret property is visible in .Net Quickviewer but not accessible to read in code

[stageact3331]

When I do a request to authenticate a user , the user’s TokenSecret property is not readable. I can view (AccessToken and TokenSecret) it when I step through my code in .Net QuickView, and when I copy and paste it manually with an email request in my app it works. But I do not know how to retrieve the tokenSecret value when I run the code. [response.TokenSecret] is not readable.

    protected override AuthenticationResult VerifyAuthenticationCore(AuthorizedTokenResponse response)
    {
        accessToken = response.AccessToken;
        string userId = response.ExtraData["user_id"];
        string userName = response.ExtraData["screen_name"];

        var profileRequestUrl = new Uri("https://api.twitter.com/1/users/show.xml?user_id="
                                   + EscapeUriDataStringRfc3986(userId));
        var profileEndpoint = new MessageReceivingEndpoint(profileRequestUrl, HttpDeliveryMethods.GetRequest);
        HttpWebRequest request = this.WebWorker.PrepareAuthorizedRequest(profileEndpoint, accessToken);

        var extraData = new Dictionary<string, string>();
        extraData.Add("accesstoken", accessToken);

        // Here we do need WebConsumer
        //InMemoryTokenManager inMemoryTokenManager = new InMemoryTokenManager(this._appKey, this._appSecret);

        try
        {
          // inMemoryTokenManager.StoreNewRequestToken(request, response);
            using (WebResponse profileResponse = request.GetResponse())
            {
                using (Stream responseStream = profileResponse.GetResponseStream())
                {
                    XDocument document = LoadXDocumentFromStream(responseStream);
                    foreach (var node in document.Descendants("user").Nodes<XElement>())
                    {
                        if (node.NodeType == XmlNodeType.Element)
                        {
                            extraData.AddDataIfNotEmpty(document, ((System.Xml.Linq.XElement)(node)).Name.LocalName);
                        }
                    }
                }
            }
        }
        catch (Exception)
        {
         
           // inMemoryTokenManager.StoreNewRequestToken(request, response);
            // At this point, the authentication is already successful.
            // Here we are just trying to get additional data if we can.
            // If it fails, no problem.
        }
   
        UserClass userclass =new UserClass
        {
            Token = response.AccessToken,
            UserID = userId,
            ScreenName = userName,
            Secret = "DmdDQmmEWJffl0HclZ6E8U3VWZfQanMYlTuAHbmYVYVmY"//response.TokenSecret,
        };
        
        return new AuthenticationResult(
            isSuccessful: true, provider: this.ProviderName, providerUserId: userId, userName: userName, extraData: extraData);

    }