title: Don`t able to save token from RestSharp OAuth request Windows Phone 8.1
body: <p>I trying to get Request Token from Trello with RestSharp. I got token only in request thread, but dont able to save it in variable of my app.
   There some code:</p>
  
  <pre><code>    private async void GetToken()
      {
  
          app.Client.Authenticator = OAuth1Authenticator.ForRequestToken(app.ConsumerKey, app.ConsumerSecret);
          var request = new RestRequest("OAuthGetRequestToken", Method.POST);
          app.Client.ExecuteAsync(request, HandleResponse);
  
      }
  
      private void HandleResponse(IRestResponse restResponse)
      {
          var Response = restResponse;
          MessageBox.Show(Response.Content);
          QueryString qs = new QueryString(Response.Content);
          app.OAuthToken = qs["oauth_token"];
          app.OAuthTokenSecret = qs["oauth_token_secret"];
          app.Verifier = qs["verifier"];
          MessageBox.Show(app.OAuthToken);       //got token here, but after
          MessageBox.Show(app.OAuthTokenSecret); //I don`t have anything in this variables
      }
  </code></pre>
  
  <p>Have you any ideas?</p>