private void OnTabItemGotFocus(object sender, RoutedEventArgs e) { if (sender == tabDrawing) { if (_drawingPage != null) { _drawingPage.PageSelected(true); } } else if (sender == tabXamlOutput) { if (_xamlPage != null) { _xamlPage.PageSelected(true); } } else if (sender == tabSvgInput) { if (_svgPage != null) { _svgPage.PageSelected(true); } } }