void ShowOAuthProblemDetails(WebResponse response)
    {
      ResultsPanel.Visible = false;

      NameValueCollection parameters = HttpUtility.ParseQueryString(response.ReadToEnd());

      ErrorInfo.Text = "Access was denied to resource.<br/><br/>";

      foreach (string key in parameters.Keys)
        ErrorInfo.Text += key + " => " + parameters[key] + "<br/>";
    }