I got the same message twice

Question

I used this code to send a different message if a new user start conversation :

IConversationUpdateActivity update = message;
            var client = new Connec         


        

Answer 1

Facebook includes the conversation itself in the list of members:

So you need to change the if statement to this:

if (newMember.Id != message.Recipient.Id && newMember.Id != message.Conversation.Id)
{ 
   // send welcome message