public async void EnterFullScreen() { await Task.Delay(100); ApplicationView.GetForCurrentView().TryEnterFullScreenMode(); _splitView.AnimateDoubleProperty("CompactPaneLength", 48, 0, 250); _commandBarT.ClosedDisplayMode = AppBarClosedDisplayMode.Hidden; _commandBarB.ClosedDisplayMode = AppBarClosedDisplayMode.Hidden; _toggle.Visibility = Visibility.Collapsed; _exitFS.Visibility = Visibility.Visible; _panes.Margin = new Thickness(0); }