How to add a mention in Teams alongside an adaptive card using Bot Framework

Question

I\'m trying to send an activity with an adaptive card attachment and include a mention to the user who created the post. From reading online I found you can\'t currently include

Answer 1

Currently Adaptive Card @mention is in developer preview but you can achieve the @Mention in adaptive card with Adaptive card 1.2 version.

You can @Mention a user in adaptive card using following JSON

{

  "type": "AdaptiveCard",

  "body": [

    {

      "type": "TextBlock",

      "size": "Medium",

      "weight": "Bolder",

      "text": "Hi <at>Mention_Name</at> This is new feature in Adaptive Card version 1.2 Please test..."

    }

  ],

  "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",

  "version": "1.0",

  "channelId": {

    "entities": [

      {

        "type": "mention",

        "text": "<at>Name</at>",

        "mentioned": {

          "id": "29:124124124124",

          "name": "Mungo"

        }

      }

    ]

  }

} 

You need to specify channelID, and mentioned ID which you can fetch from the activity object itself

Answer 2

Have you thought about (a) sending the adaptive card and (b) sending a "Reply" message to the original Adaptive Card you sent? I haven't done this before, but I'm guessing the id that comes back from turnContext.SendActivityAsync (on the ResourceResponse instance) is the id you can use to "reply" to the message you just created.

Update: I got it working. This is -very- rough code but hopefully enough that you can figure out/adjust to your scenario:

 var result = connector.Conversations.SendToConversationAsync([your conversation id], activity).Result;

// I'm re-using the same activity just as a test, you can do whatever (e.g. create a new one)
activity.Text = "Msg 2";
var conversationReference = activity.GetReplyConversationReference(result);
conversationReference.Conversation.Id = conversationReference.Conversation.Id + ";messageid=" + result.Id;
activity.ApplyConversationReference(conversationReference);

connector.Conversations.SendToConversationAsync(conversationReference.Conversation.Id, activity);

So note, really important, you need to change your conversation id to add ";messageid=" to the end, and ADD the reference the message you just posted.

Here's a screenshot:

Hope that helps, and thanks for this - gave me a chance to learn something useful!