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UIVirtualization support to handle the numerous data in Xamarin.iOS Carousel

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Carousel control can handle the numerous data using UI virtualization by maintaining only the view port items into it.



Properties are used to achieve UI Virtualization options



Data Type

Default Value






Enable or disable UI Virtualization options in carousel control




To load the collection of data’s



DrawView event is used to pass the custom view into your carousel view. It holds the following arguments



  1. Index – Gets the indexed of carousel item.
  2. View – Gets and Sets the custom view of carousel’s item.
  3. Item – Gets the indexed carousel item.


The following code example illustrates the way to use the UI Virtualization feature on carousel control.

In ViewDidLoad:



  public override void ViewDidLoad()
            SFCarousel sFCarousel = new SFCarousel();
            sFCarousel.Frame = new CoreGraphics.CGRect(0, 150, 400, 400);
            ObservableCollection<string> list = new ObservableCollection<string>();
            for (int i = 1; i < 100000; i++)
                list.Add("Item " + i.ToString());
            sFCarousel.ItemWidth = 150;
            sFCarousel.ItemHeight = 150;
            sFCarousel.EnableVirtualization = true;
            sFCarousel.ViewMode = SFCarouselViewMode.SFCarouselViewModeLinear;
            sFCarousel.ItemsSource = list;
            sFCarousel.DrawView+=(object sender, DrawViewEventArgs e) => 
                UIView carouselView = new UIView();
                carouselView.BackgroundColor = UIColor.Red;
                carouselView.Frame = new CoreGraphics.CGRect(0, 0, 150, 150);
                UILabel iconLabel = new UILabel();
                iconLabel.Frame = new CoreGraphics.CGRect(35, 30, 80, 80);
                iconLabel.Text = (sFCarousel.ItemsSource as ObservableCollection<string>)[e.Index];
                iconLabel.TextColor = UIColor.White;
                iconLabel.TextAlignment = UITextAlignment.Center;
                e.View = carouselView;
            // Perform any additional setup after loading the view, typically from a nib.






I hope you enjoyed learning about UIVirtualization support to handle the numerous data in Carousel.

You can refer to our Xamarin.iOS Carousel feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our  Xamarin.iOS Carousel example
to understand how to create and manipulate data.

For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion, you can try our 30-day free trial
to check out our other controls.

If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forumsDirect-Trac, or feedback portal. We are always happy to assist you!

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