Botframework c#：在步骤上下文中重新提示用户输入并将值传递给另一个 class

Question

我实际上有两个问题。

首先：我想在 case.intent（在瀑布中）中重新提示用户输入。我使用 var value = ((string)stepContext.Result); 但它只是存储用户已经提供的输入而不是询问新的输入。

第二：然后我想将 value 传递给另一个 class：cards.cs，然后在自适应卡中呈现。我想在 cards.cs

中使用它而不是 "Mickey Mouse"

如何将变量从一个 class 存储到另一个。我来自 python 背景，我可以在 C# 中使用全局变量吗？

在maindialog.cs中我写了以下内容。

                case FlightBooking.Intent.order:

                    var modifiermessagetext = "What is your order";
                    var value = ((string)stepContext.Result);



                    var modifiermessage = MessageFactory.Text(modifiermessagetext, modifiermessagetext, InputHints.IgnoringInput);
                    var messageText70 = stepContext.Options?.ToString() ?? "you can contact the customer service at 098789876";
                    var promptMessage70 = MessageFactory.Text(messageText70, messageText70, InputHints.ExpectingInput);
                    await stepContext.Context.SendActivityAsync(modifiermessage, cancellationToken);
                    var attachments70 = new List<Attachment>();
                    var reply70 = MessageFactory.Attachment(attachments70);
                    reply70.Attachments.Add(Cards.CardJson());
                    await stepContext.Context.SendActivityAsync(reply70, cancellationToken);
                    return await stepContext.PromptAsync(nameof(TextPrompt), new PromptOptions { Prompt = promptMessage70 }, cancellationToken);

在Cards.cs中：

        public static Attachment CardJson()
        {
            var templateJson = @"
                                            {
                                                ""type"": ""AdaptiveCard"",
                                                ""version"": ""1.0"",
                                                ""body"": [
                                                    {
                                                        ""type"": ""TextBlock"",
                                                        ""text"": ""Hello {name}""
                                                    }
                                                ]
                                            }";

        var dataJson = @"
                    {
                        ""name"": ""Mickey Mouse""
                    }";

        var transformer = new AdaptiveTransformer();
        var cardJson = transformer.Transform(templateJson, dataJson);
        var adaptiveCardAttachment = new Attachment()
        {
            ContentType = "application/vnd.microsoft.card.adaptive",
            Content = JsonConvert.DeserializeObject(cardJson),
        };
            return adaptiveCardAttachment;
        }

我正在使用自适应卡片的新功能：https://docs.microsoft.com/en-us/adaptive-cards/templating/sdk

有没有简单的方法可以做到这一点？欢迎任何建议。谢谢！

Answer 1

首先让我解释一下 waterfall 对话框是如何工作的

根据Microsoft Docs

A waterfall dialog is a specific implementation of a dialog that is commonly used to collect information from the user or guide the user through a series of tasks. Each step of the conversation is implemented as an asynchronous function that takes a waterfall step context (step) parameter. At each step, the bot prompts the user for input (or can begin a child dialog, but that it is often a prompt), waits for a response, and then passes the result to the next step. The result of the first function is passed as an argument into the next function, and so on.

下图显示了一系列瀑布步骤和发生的堆栈操作。

这意味着当您在瀑布式步骤中提示一个对话框时，您可以在NEXT中得到该结果瀑布的步骤 与您尝试的步骤不在同一步骤内。

stepContext.Result：从Previous瀑布步骤
stepContext.Options：包含对话框的输入信息。它获取调用瀑布对话框时使用的任何选项。
例如假设你做了 await context.BeginDialogAsync("yourWaterfallDialog", false);
“false” 是 Options 可以是像这样从你的瀑布步骤中获取
if (sc.Options != null && sc.Options is bool) { valid = (bool)sc.Options; }
stepContext.Values：包含您可以添加到上下文的信息，并被带入后续步骤。它是一个值字典，将 保留在所有瀑布步骤中 示例：stepContext.Values["name"] = "Marc"

看看这个例子：

    private async Task<DialogTurnResult> StepOne(WaterfallStepContext stepContext, CancellationToken cancellationToken)
         {
            return await stepContext.PromptAsync(nameof(TextPrompt), new PromptOptions Prompt = promptMessage70 }, cancellationToken);
         }



    private async Task<DialogTurnResult> StepTwo(WaterfallStepContext stepContext, CancellationToken cancellationToken)
        {
          // Get the user response from StepOne: 
          var value = ((string)stepContext.Result);
          // we pass the value to CardJson
          reply70.Attachments.Add(Cards.CardJson(value));
          await stepContext.Context.SendActivityAsync(reply70,cancellationToken);
        }

如您所见，在 StepTwo 中，我们从 StepOne[=58] 中获取了用户输入的 result =].
要在自适应卡中获取 Value 而不是 "Mickey Mouse" ，您只需将其作为 字符串参数 传递，就像这样 Cards.CardJson(值)

public static Attachment CardJson(string value){ ... var dataJson = @"{'name': '" + value + "'}"; ... }

Botframework c#：在步骤上下文中重新提示用户输入并将值传递给另一个 class

Botframework c# : reprompt user input within a stepcontext and pass the value into another class

c#

botframework

adaptive-cards