c# – “帖子的链接必须指向应用程序的连接或画布URL”？

(OAuthException) (#100) The post’s links must direct to the application’s connect or canvas URL.

有谁知道如何解决这一问题？我听说过画布应用程序,但我认为这不适用于手机应用程序.也许这是Facebook上的一个设置？

任何反馈都表示赞赏.

这是我用来发布到Facebook的代码：

private void button1_Click(object sender,RoutedEventArgs e)
    {
        _fbClient.PostCompleted +=
            (o,er) =>
                {
                    if (er.Error == null)
                    {
                        MessageBox.Show("Success");
                    }
                    else
                    {
                        MessageBox.Show(er.Error.Message);
                    }
                };

        var args = new Dictionary<string,object>();
        args["name"] = "Hello World!!"; 
        args["link"] = "http://www.nfl.com"; 
        args["caption"] = ""; 
        args["description"] = ""; 
        args["picture"] = ""; 
        args["message"] = "Hello World from application."; 
        args["actions"] = "";

        FacebookAsyncCallback callback = new FacebookAsyncCallback(this.postResult);
        _fbClient.PostAsync("me/feed",args,callback);
    }

    private void postResult(FacebookAsyncResult asynchResult)
    {
        MessageBox.Show("Success");
    }

注意：如果我从“链接”中删除字符串,它的工作原理.