CardsDialog.cs

namespace CardsBot
{
    using System;
    using System.Collections.Generic;
    using System.Threading.Tasks;
    using Microsoft.Bot.Builder.Dialogs;
    using Microsoft.Bot.Connector;

    [Serializable]
    public class CardsDialog : IDialog<object>
    {
        private const string HeroCard = "Hero card";
        private const string ThumbnailCard = "Thumbnail card";
        private const string ReceiptCard = "Receipt card";
        private const string SigninCard = "Sign-in card";

        private IEnumerable<string> options = new List<string> { HeroCard, ThumbnailCard, ReceiptCard, SigninCard };

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

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

            PromptDialog.Choice<string>(
                context,
                this.DisplaySelectedCard,
                this.options,
                "What card would like to test?",
                "Ooops, what you wrote is not a valid option, please try again",
                3,
                PromptStyle.PerLine);
        }

        public async Task DisplaySelectedCard(IDialogContext context, IAwaitable<string> result)
        {
            var selectedCard = await result;

            var message = context.MakeMessage();

            var attachment = GetSelectedCard(selectedCard);
            message.Attachments.Add(attachment);

            await context.PostAsync(message);

            context.Wait(this.MessageReceivedAsync);
        }

        private static Attachment GetSelectedCard(string selectedCard)
        {
            switch (selectedCard)
            {
                case HeroCard:
                    return GetHeroCard();
                case ThumbnailCard:
                    return GetThumbnailCard();
                case ReceiptCard:
                    return GetReceiptCard();
                case SigninCard:
                    return GetSigninCard();

                default:
                    return GetHeroCard();
            }
        }

        private static Attachment GetHeroCard()
        {
            var heroCard = new HeroCard
            {
                Title = "BotFramework Hero Card",
                Subtitle = "Your bots — wherever your users are talking",
                Text = "Build and connect intelligent bots to interact with your users naturally wherever they are, from text/sms to Skype, Slack, Office 365 mail and other popular services.",
                Images = new List<CardImage> { new CardImage("https://sec.ch9.ms/ch9/7ff5/e07cfef0-aa3b-40bb-9baa-7c9ef8ff7ff5/buildreactionbotframework_960.jpg") },
                Buttons = new List<CardAction> { new CardAction(ActionTypes.OpenUrl, "Get Started", value: "https://docs.botframework.com/en-us/") }
            };

            return heroCard.ToAttachment();
        }

        private static Attachment GetThumbnailCard()
        {
            var heroCard = new ThumbnailCard
            {
                Title = "BotFramework Thumbnail Card",
                Subtitle = "Your bots — wherever your users are talking",
                Text = "Build and connect intelligent bots to interact with your users naturally wherever they are, from text/sms to Skype, Slack, Office 365 mail and other popular services.",
                Images = new List<CardImage> { new CardImage("https://sec.ch9.ms/ch9/7ff5/e07cfef0-aa3b-40bb-9baa-7c9ef8ff7ff5/buildreactionbotframework_960.jpg") },
                Buttons = new List<CardAction> { new CardAction(ActionTypes.OpenUrl, "Get Started", value: "https://docs.botframework.com/en-us/") }
            };

            return heroCard.ToAttachment();
        }

        private static Attachment GetReceiptCard()
        {
            var receiptCard = new ReceiptCard
            {
                Title = "John Doe",
                Facts = new List<Fact> { new Fact("Order Number", "1234"), new Fact("Payment Method", "VISA 5555-****") },
                Items = new List<ReceiptItem>
                {
                    new ReceiptItem("Data Transfer", price: "$ 38.45", quantity: "368", image: new CardImage(url: "https://github.com/amido/azure-vector-icons/raw/master/renders/traffic-manager.png")),
                    new ReceiptItem("App Service", price: "$ 45.00", quantity: "720", image: new CardImage(url: "https://github.com/amido/azure-vector-icons/raw/master/renders/cloud-service.png")),
                },
                Tax = "$ 7.50",
                Total = "$ 90.95",
                Buttons = new List<CardAction>
                {
                    new CardAction(
                        ActionTypes.OpenUrl,
                        "More information",
                        "https://account.windowsazure.com/content/6.10.1.38-.8225.160809-1618/aux-pre/images/offer-icon-freetrial.png",
                        "https://azure.microsoft.com/en-us/pricing/")
                }
            };

            return receiptCard.ToAttachment();
        }

        private static Attachment GetSigninCard()
        {
            var signinCard = new SigninCard
            {
                Text = "BotFramework Sign-in Card",
                Buttons = new List<CardAction> { new CardAction(ActionTypes.Signin, "Sign-in", value: "https://login.microsoftonline.com/") }
            };

            return signinCard.ToAttachment();
        }
    }
}