public void Handle(TreeViewClicked notification) { Console.WriteLine(notification.typeClicked); if (notification.typeClicked == "Studenci") { form.ShowListView(0); } else if (notification.typeClicked == "Wykładowcy") { form.ShowListView(1); } else { string[] personData = notification.typeClicked.Split(" "); form.ShowPersonView(personData[0], personData[1]); } }