BotBuilder-Samples/CSharp/demo-CardsAttachments/public-TestBot/Scorables/RichCards/ThumbnailCardScorable.cs

namespace TestBot.Scorables
{
    using System.Collections.Generic;
    using Microsoft.Bot.Builder.Dialogs.Internals;
    using Microsoft.Bot.Connector;

    public class ThumbnailCardScorable : RichCardScorable
    {
        public ThumbnailCardScorable(IBotToUser botToUser, IBotData botData) : base(botToUser, botData)
        {
        }

        public override string Trigger
        {
            get
            {
                return "Thumbnail";
            }
        }

        protected override IList<Attachment> GetCardAttachments()
        {
            return new List<Attachment>
            {
                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.microsoft.com/bot-framework") }
                }.ToAttachment()
            };
        }
    }
}