protected override async Task OnMembersAddedAsync(IList <ChannelAccount> membersAdded, ITurnContext <IConversationUpdateActivity> turnContext, CancellationToken cancellationToken) { foreach (var member in membersAdded) { if (member.Id != turnContext.Activity.Recipient.Id) { CardGenerator cardGenerator = new CardGenerator(); await cardGenerator.AttachServiceCardAsync(turnContext, cancellationToken); LoginRequest.Logout(); } } }