//List<string> temp; public AppControl() { _viewModel = new AppControlViewModel(); InitializeComponent(); this.SizeChanged += new SizeChangedEventHandler(OnSizeChanged); this.SizeChanged += new SizeChangedEventHandler(OnResize); this.IsVisibleChanged += new DependencyPropertyChangedEventHandler(OnVisibleChanged); topWin = (GetTopLevelControl(this) as Window); }