ikivanc

// Reply to the activity we received with an activity.
var reply = turnContext.Activity.CreateReply();

var heroCard = new HeroCard
{
    Title = "BotFramework Hero Card",
    Subtitle = "Microsoft Bot Framework",
    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") },

ikivanc

 // Reply to the activity we received with an activity.
 var reply = turnContext.Activity.CreateReply();

// combine path for cross platform support
string[] paths = { ".", "Resources", "adaptiveCard.json" };
var adaptiveCardJson = File.ReadAllText(Path.Combine(paths));

var adaptiveCardAttachment = new Attachment()
{

ikivanc

 // Reply to the activity we received with an activity.
 var reply = turnContext.Activity.CreateReply();

 var heroCard = new ThumbnailCard
 {
     Title = "BotFramework Thumbnail Card",
     Subtitle = "Microsoft Bot Framework",
     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") },

ikivanc

//Send typing activity to User
var typing = turnContext.Activity.CreateReply();
typing.Type = ActivityTypes.Typing;
await turnContext.SendActivityAsync(typing);