使用IDialog处理各种消息

假设你有一个 ContactUsDialog , PizzaOrderDialog 以及 MyOrderDialog . 用户会发送这样的消息:' 我点的披萨有多远 “-你怎么知道该启动哪个对话框?

    public async Task<HttpResponseMessage> Post([FromBody] Activity activity)
    {
        if (activity != null)
        {
            switch (activity.GetActivityType())
            {
                case ActivityTypes.Message:
                    await Conversation.SendAsync(activity, () => new ContactUsDialg());
                    await Conversation.SendAsync(activity, () => new PizzaOrderDialog());
                    await Conversation.SendAsync(activity, () => new MyOrderDialog());
                    break;
        }
        return new HttpResponseMessage(System.Net.HttpStatusCode.Accepted);
    }