How to send a 'conversationUpdate' to Microsoft Teams from bot manually?

Question

I have a bot written with the help of bot framework v4. The bot is integrated with Microsoft Teams. I want to send a welcome message to the user when the user insta

Answer 1

I'm not sure of a way to force a ConversationUpdate to be sent in the way you're attempting to. Instead, I'd just throw something like this in OnMessageAsync():

if (turnContext.Activity.Text == "fakeConversationUpdate")
{
    var fakeTurnContext = new TurnContext(turnContext.Adapter, MessageFactory.Text(string.Empty));
    fakeTurnContext.Activity.AsConversationUpdateActivity();
    fakeTurnContext.Activity.Type = ActivityTypes.ConversationUpdate;
    fakeTurnContext.Activity.MembersAdded = new List<ChannelAccount>()
    {
        new ChannelAccount()
        {
            Id = "fakeUserId",
            Name = "fakeUserName"
        }
    };
    await OnConversationUpdateActivityAsync(new DelegatingTurnContext<IConversationUpdateActivity>(fakeTurnContext), cancellationToken);

}

Then to debug, you just write "fakeConversationUpdate" (which you can change/customize) to the bot in chat and it will send your fakeTurnContext (which you can change/customize) through OnConversationUpdateActivityAsync()