private void OnNavigationViewItemInvoked()

in XamlControlsGallery/Navigation/NavigationRootPage.xaml.cs [267:319]
46 lines of code
10 McCabe index (conditional complexity)

        private void OnNavigationViewItemInvoked(Microsoft.UI.Xaml.Controls.NavigationView sender, Microsoft.UI.Xaml.Controls.NavigationViewItemInvokedEventArgs args)
        {
            // Close any open teaching tips before navigation
            CloseTeachingTips();

            if(args.InvokedItemContainer.IsSelected)
            {
                // Clicked on an item that is already selected,
                // Avoid navigating to the same page again causing movement.
                return;
            }

            if (args.IsSettingsInvoked)
            {
                if (rootFrame.CurrentSourcePageType != typeof(SettingsPage))
                {
                    rootFrame.Navigate(typeof(SettingsPage));
                }
            }
            else
            {
                var invokedItem = args.InvokedItemContainer;

                if (invokedItem == _allControlsMenuItem)
                {
                    if (rootFrame.CurrentSourcePageType != typeof(AllControlsPage))
                    {
                        rootFrame.Navigate(typeof(AllControlsPage));
                    }
                }
                else if (invokedItem == _newControlsMenuItem)
                {
                    if (rootFrame.CurrentSourcePageType != typeof(NewControlsPage))
                    {
                        rootFrame.Navigate(typeof(NewControlsPage));
                    }
                }
                else
                {
                    if (invokedItem.DataContext is ControlInfoDataGroup)
                    {
                        var itemId = ((ControlInfoDataGroup)invokedItem.DataContext).UniqueId;
                        rootFrame.Navigate(typeof(SectionPage), itemId);
                    }
                    else if (invokedItem.DataContext is ControlInfoDataItem)
                    {
                        var item = (ControlInfoDataItem)invokedItem.DataContext;
                        rootFrame.Navigate(typeof(ItemPage), item.UniqueId);
                    }

                }
            }
        }