如何从ActivityHandler.OnMessageActivityAsync启动瀑布对话框

Question

我正在尝试编写一个简单的机器人，当用户输入内容时，它将启动我的瀑布对话框。用例非常简单，但似乎不起作用，怎么了？

主机器人是这样设置的，我尝试在OnMessageActivityAsync函数中调用我的对话框：

namespace EmptyBot1.Dialogs
{
    public class MainChatbot : ActivityHandler
    {
        private readonly IOptions<Models.Configurations> _mySettings;
        protected readonly IRecognizer _recognizer;
        protected readonly BotState _conversationState;

        public MainChatbot(ConversationState conversationState, IOptions<Models.Configurations> mySettings, ChatbotRecognizer recognizer)
        {
            _mySettings = mySettings ?? throw new ArgumentNullException(nameof(mySettings));
            _recognizer = recognizer;
            _conversationState = conversationState;
        }

        protected override async Task OnMessageActivityAsync(ITurnContext<IMessageActivity> turnContext, CancellationToken cancellationToken)
        {
            string LuisAppId = _mySettings.Value.LuisAppId;
            string LuisAPIKey = _mySettings.Value.LuisAPIKey;
            string LuisAPIHostName = _mySettings.Value.LuisAPIHostName;
            await turnContext.SendActivityAsync(MessageFactory.Text($"You Said: {turnContext.Activity.Text}"), cancellationToken);


            var luisResult = await _recognizer.RecognizeAsync<Models.ChatbotIntent>(turnContext, cancellationToken);
            Models.ChatbotIntent.Intent TopIntent = luisResult.TopIntent().intent;
            await turnContext.SendActivityAsync(MessageFactory.Text($"Your Intention Is: {TopIntent.ToString()}"), cancellationToken);

            switch (TopIntent)
            {
                case Models.ChatbotIntent.Intent.RunBot:
                    var RunBotOptions = new Models.RunBotOptions();
                    Dialog d = new MyCustomDialog();
                    // Trying to start my dialog here.
                    await d.RunAsync(turnContext, _conversationState.CreateProperty<DialogState>(nameof(DialogState)), cancellationToken);
                    break;
                default:
                    break;
            }
            return;
        }


    }
}

然后我像这样设置对话框，也很简单：

namespace EmptyBot1.Dialogs
{
    public class MyCustomDialog : InteruptsDialog
    {
        public MyCustomDialog()
            : base(nameof(MyCustomDialog))
        {
            AddDialog(new TextPrompt(nameof(TextPrompt)));
            AddDialog(new ConfirmPrompt(nameof(ConfirmPrompt)));
            AddDialog(new WaterfallDialog(nameof(WaterfallDialog), new WaterfallStep[]
            {
                AskName,
                AskUseDefault,
                FinalStep
            }));

            // The initial child Dialog to run.
            InitialDialogId = nameof(WaterfallDialog);
        }
     // ...
    }
}

一切都注入了startup.cs

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

        // Add functionality to inject IOptions<T>
        services.AddOptions();

        // Add our Config object so it can be injected
        services.Configure<Models.Configurations>(Configuration);

        // Create the Bot Framework Adapter with error handling enabled.
        services.AddSingleton<IBotFrameworkHttpAdapter, AdapterWithErrorHandler>();

        // Create the bot as a transient. In this case the ASP Controller is expecting an IBot.
        services.AddTransient<IBot, Dialogs.MainChatbot>();

        // Create the Conversation state. (Used by the Dialog system itself.)
        var storage = new MemoryStorage();
        var conversationState = new ConversationState(storage);
        services.AddSingleton(conversationState);



        // Register LUIS recognizer
        services.AddSingleton<ChatbotRecognizer>();

        services.AddSingleton<Dialogs.MyCustomDialog>();
    }

但是当我运行它时，出现500错误，我在做什么错？

编辑：澄清一下，我的目标是能够直接从ActivityHandler.OnMessageActivityAsync启动一个硬编码的瀑布对话框。来自在线的一般解决方案以及来自Microsoft的示例项目的通用解决方案都表示要将对话框作为T型传递给我的机器人。但是，我已经确切知道要启动哪个对话框，因此需要将其作为类型传递，我可以直接在bot内对其进行硬编码，如何启动它？

Answer 1

据我所知，在启动时添加机器人本身并不是在添加机器人。你有

// Create the bot as a transient. In this case the ASP Controller is expecting an IBot.
services.AddTransient<IBot, Dialogs.MainChatbot>();

尝试：

// Create the bot as a transient. In this case the ASP Controller is expecting an IBot.
services.AddTransient<IBot, MainChatbot<MyCustomDialog>>();

为了做到这一点，您将不得不更改MainChatBot。在班级任务中，您具有：

public class MainChatbot : ActivityHandler

将其更改为：

public class MainChatbot<T> : ActivityHandler
    where T : Dialog

您在其中拥有主要的“机器人”，但是直到得到LUIS意向后您才调用对话框。但是，在启动对话框之前，您不能调用LUIS意图。而是使用对话框初始化您的机器人，因此您的机器人实际上知道从哪里“开始”。

Answer 2

结果是我的代码似乎运行良好，不确定为什么昨天无法运行。我将其留给将来的人检查答案。您可以完全按照问题中的说明使用它。