finished basics

Yapper/MVVM/ViewModel/MainViewModel.cs

@@ -14,16 +14,40 @@ namespace YapperClient.MVVM.ViewModel
     class MainViewModel
     {
         public ObservableCollection<UserModel> Users { get; set; }
+        public ObservableCollection<string> Messages { get; set; }
         public RelayCommand ConnectToServerCommand { get; set; }
+        public RelayCommand SendMessageCommand { get; set; }
 
         public string UserName { get; set; }
+        public string Message { get; set; }
 
         private Server _server;
         public MainViewModel() {
             Users = new ObservableCollection<UserModel>();
+            Messages = new ObservableCollection<string>();
+
             _server = new Server();
             _server.connectedEvent += UserConnected;
+            _server.msgReceivedEvent += MessageReceived;
+            _server.userDisconnectedEvent += RemoveUser;
             ConnectToServerCommand = new RelayCommand(o => _server.ConnectToServer(UserName), o => !string.IsNullOrEmpty(UserName));
+
+            SendMessageCommand = new RelayCommand(o => _server.SendMessageToServer(Message), o => !string.IsNullOrEmpty(Message));
+        }
+
+        private void RemoveUser()
+        {
+            var uid = _server.PacketReader.ReadMessage();
+            var user = Users.FirstOrDefault(x => x.UID == uid);
+
+            Application.Current.Dispatcher.Invoke(() => Users.Remove(user));
+        }
+
+
+        private void MessageReceived()
+        {
+            var msg = _server.PacketReader.ReadMessage();
+            Application.Current.Dispatcher.Invoke(() => Messages.Add(msg));
         }
 
         private void UserConnected()