Lync - subscribe to IM

Lync.cs

private static LyncClient client;

// Your custom class that handles conversation events
private static LyncConversationManager conversation;

static void Main(string[] args)
{
  client = LyncClient.GetClient();
  conversation = new LyncConversationManager(brain, client);
  conversation.StartListening();
  Console.ReadKey();
}

...

public void StartListening()
{
  lyncClient.ConversationManager.ConversationAdded += ConversationManager_ConversationAdded;
}

private void ConversationManager_ConversationAdded(object sender, ConversationManagerEventArgs e)
{
  e.Conversation.ParticipantAdded += Conversation_ParticipantAdded;
  
  foreach (var key in e.Conversation.Modalities.Keys)
  {
    Modality val = e.Conversation.Modalities[key];
    if (val != null)
    {
      val.Accept();
    }
  }
}

...

private void Conversation_ParticipantAdded(object sender, ParticipantCollectionChangedEventArgs e)
{
  if (e.Participant.IsSelf == false)
  {
    var imModality = (InstantMessageModality) e.Participant.Modalities[ModalityTypes.InstantMessage];
    imModality.InstantMessageReceived += ImModality_InstantMessageReceived;
  }
}

private void ImModality_InstantMessageReceived(object sender, MessageSentEventArgs e)
{
  InstantMessageModality im = (InstantMessageModality)sender;
  if (!im.Participant.IsSelf)
  {
    // Here goes the code that will forward and respond to the messages
  }
}