button1_Click(= = = = NotifyFilters.LastAccess || NotifyFilters.FileName |= += (s,e1)=> .Dispatcher.Invoke( Action(() =>= e1.Name + += (s, e1) => .Dispatcher.Invoke( Action(() => { label1.Content = e1.Name + += (s, e1) => .Dispatcher.Invoke( Action(() => { label1.Content = e1.Name + += (s, e1) => .Dispatcher.Invoke( Action(() =>= e1.OldName + + watcher.EnableRaisingEvents =