/// <summary> /// Class constructor /// </summary> public FilterMessageAddIn() { InitializeComponent(); //Get the group chat room that is hosting this add-in _HostingRoom = LyncClient.GetHostingRoom(); if (_HostingRoom != null) { //If the hosting room outgoing message filter is not enabled then enable it. if (_HostingRoom.IsOutgoingMessageFilterEnabled == false) { _HostingRoom.EnableOutgoingMessageFilter(); } //Register for outgoing message post events. _HostingRoom.IsSendingMessage += new EventHandler <RoomMessageEventArgs>(_HostingRoom_IsSendingMessage); } }