如何退出 C# bot-framework 中的对话框？

Question

我正在使用机器人框架在 C# 中启动一个 ChatBot 项目。

我选择ContosoFlowers例子是为了学习bot框架的使用。在 AddressDialog 中，用户在不提供地址的情况下进入对话框后无法退出。

我如何更新代码以便当用户回复 "Cancel" 或 "Abort" 或 "B" 或 "Back" 时他们退出对话框？

namespace ContosoFlowers.BotAssets.Dialogs
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Threading.Tasks;
    using Extensions;
    using Microsoft.Bot.Builder.Dialogs;
    using Microsoft.Bot.Connector;
    using Properties;
    using Services;

    [Serializable]
    public class AddressDialog : IDialog<string>
    {
        private readonly string prompt;
        private readonly ILocationService locationService;

        private string currentAddress;

        public AddressDialog(string prompt, ILocationService locationService)
        {
            this.prompt = prompt;
            this.locationService = locationService;
        }

        public async Task StartAsync(IDialogContext context)
        {
            await context.PostAsync(this.prompt);
            context.Wait(this.MessageReceivedAsync);
        }

        public virtual async Task MessageReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> result)
        {
            var message = await result;

            var addresses = await this.locationService.ParseAddressAsync(message.Text);
            if (addresses.Count() == 0)
            {

                await context.PostAsync(Resources.AddressDialog_EnterAddressAgain);
                context.Wait(this.MessageReceivedAsync);
            }
            else if (addresses.Count() == 1)
            {
                this.currentAddress = addresses.First();
                PromptDialog.Choice(context, this.AfterAddressChoice, new[] { Resources.AddressDialog_Confirm, Resources.AddressDialog_Edit }, this.currentAddress);
            }
            else
            {
                var reply = context.MakeMessage();
                reply.AttachmentLayout = AttachmentLayoutTypes.Carousel;

                foreach (var address in addresses)
                {
                    reply.AddHeroCard(Resources.AddressDialog_DidYouMean, address, new[] { new KeyValuePair<string, string>(Resources.AddressDialog_UseThisAddress, address) });
                }

                await context.PostAsync(reply);
                context.Wait(this.MessageReceivedAsync);
            }
        }

        private async Task AfterAddressChoice(IDialogContext context, IAwaitable<string> result)
        {
            try
            {
                var choice = await result;

                if (choice == Resources.AddressDialog_Edit)
                {
                    await this.StartAsync(context);
                }
                else
                {
                    context.Done(this.currentAddress);
                }
            }
            catch (TooManyAttemptsException)
            {
                throw;
            }
        }
    }

}

Answer 1

您只需要在 MessageReceivedAsync 方法的顶部处理退出条件。

在对话框的顶部，您可以添加类似

的内容

private static IEnumerable<string> cancelTerms = new[] { "Cancel", "Back", "B", "Abort" };

并添加此方法：

public static bool IsCancel(string text)
{
   return cancelTerms.Any(t => string.Equals(t, text, StringComparison.CurrentCultureIgnoreCase));
}

然后就是了解用户发送的消息是否符合任何取消条款。在 MessageReceivedAsync 方法中执行如下操作：

public virtual async Task MessageReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> result)
{
   var message = await result;

   if (IsCancel(message.Text)) 
   {
     context.Done<string>(null);
   }

   // rest of the code of this method..
}

您还可以更通用一些，并创建一个类似于 CancelablePromptChoice.

中所做的 CancelableIDialog

如何退出 C# bot-framework 中的对话框？

How can you quit from dialog in C# bot-framework?

c#

botframework