Facebook c# sdk 从Facebook SDK v5.4迁移到alpha v6时出现问题

我在登录后使用了下面的代码，它在5.4.1上运行，但是现在它没有按预期工作

FacebookOAuthResult pResult;
if (m_pClient.TryParseOAuthCallbackUrl(e.Uri, out pResult))
{
  if (pResult.IsSuccess)
  {
    //handle if success
  }
  else
  {
  //handle if failed
  }
}

我将FacebookOAuthClient迁移到FacebookClient，迁移完所有内容后，这一切都不起作用

我的登录代码如下。我试过旧方法和新方法，但都不管用。注释部分是我为5.4工作的遗留代码。你能帮我看看我做错了什么吗

//Dictionary<string, object> pParameters = new Dictionary<string, object> 
//{
// {"response_type", "token"},
// {"display", "touch"},
//};
//if ((extendedPermissions != null) && (extendedPermissions.Length > 0))
//{
// StringBuilder pScope = new StringBuilder();
// pScope.Append(string.Join(",", extendedPermissions));
// pParameters["scope"] = pScope.ToString();
//}

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我建议您查看以下位置的winforms示例：

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我已经将代码回滚到版本5.4，因为所有内容都正常工作，正如该版本中所预期的那样。我会一直等到v6离开alpha。

Uri pLoginUrl = m_pClient.GetLoginUrl(new { response_type = "token", display = "touch", scope = "publish_stream, offline_access", next = "https://www.facebook.com/connect/login_success.html" }); //also tried redirect_uri=""
m_pBrowser.Visibility = System.Windows.Visibility.Visible;
m_pBrowser.Navigate(pLoginUrl);

    private Uri GenerateLoginUrl(string appId, string extendedPermissions)
    {
        dynamic parameters = new ExpandoObject();
        parameters.client_id = appId;
        parameters.redirect_uri = "https://www.facebook.com/connect/login_success.html";

        // The requested response: an access token (token), an authorization code (code), or both (code token).
        parameters.response_type = "token";

        // list of additional display modes can be found at http://developers.facebook.com/docs/reference/dialogs/#display
        parameters.display = "popup";

        // add the 'scope' parameter only if we have extendedPermissions.
        if (!string.IsNullOrWhiteSpace(extendedPermissions))
            parameters.scope = extendedPermissions;
        var fb = new FacebookClient();
        // when the Form is loaded navigate to the login url.
        return fb.GetLoginUrl(parameters);
    }