CarouselView in XamarinForms

In your XAML you have the following line:

<cv:CarouselView ItemsSource="{Binding Zoos}" x:Name="CarouselZoos"> 

This means that the code is looking to bind a property named Zoos to the ItemsSource property of the CarouselView. You will need to create a property of type List<View> and implement the INotifyPropertyChanged structure to update the view. You'll also need to assign the content page's BindingContext to itself (BindingContext = this;).

You may also find that you cannot simply bind a URL to the Image source, and expect the image to appear.

Add the BindingContext=this; after the InitializeComponent(); or else add CarouselZoos.ItemsSource = Zoos; in OnAppearing() method

Try this
First add this class, for property binding and implement the INotifyPropertyChanged structure to update the view.

public class ViewModelBase : INotifyPropertyChanged { string title = string.Empty; /// <summary> /// Gets or sets the title. /// </summary> /// <value>The title.</value> public string Title { get { return title; } set { SetProperty(ref title, value); } } string icon = string.Empty; /// <summary> /// Gets or sets the icon. /// </summary> /// <value>The icon.</value> public string Icon { get { return icon; } set { SetProperty(ref icon, value); } } bool isBusy; /// <summary> /// Gets or sets a value indicating whether this instance is busy. /// </summary> /// <value><c>true</c> if this instance is busy; otherwise, <c>false</c>.</value> public bool IsBusy { get { return isBusy; } set { SetProperty(ref isBusy, value); } } /// <summary> /// Sets the property. /// </summary> /// <returns><c>true</c>, if property was set, <c>false</c> otherwise.</returns> /// <param name="backingStore">Backing store.</param> /// <param name="value">Value.</param> /// <param name="propertyName">Property name.</param> /// <param name="onChanged">On changed.</param> /// <typeparam name="T">The 1st type parameter.</typeparam> protected bool SetProperty<T>( ref T backingStore, T value, [CallerMemberName]string propertyName = "", Action onChanged = null) { if (EqualityComparer<T>.Default.Equals(backingStore, value)) return false; backingStore = value; onChanged?.Invoke(); OnPropertyChanged(propertyName); return true; } /// <summary> /// Occurs when property changed. /// </summary> public event PropertyChangedEventHandler PropertyChanged; /// <summary> /// Raises the property changed event. /// </summary> /// <param name="propertyName">Property name.</param> protected void OnPropertyChanged([CallerMemberName]string propertyName = "") => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName)); } 

Now when you got the base class for bind properties you can add a view model class for bind the properties and follow the MVVM pattern. I think this is the most property way to manipulate the data.

public class Zoo { public string ImageUrl { get; set; } public string Name { get; set; } } public class CarouselViewModel : ViewModelBase { private ObservableCollection<Zoo> zoos; public ObservableCollection<Zoo> Zoos { get => zoos; set => SetProperty(ref zoos, value); } public CarouselViewModel() { zoos = new ObservableCollection<Zoo> { new Zoo { ImageUrl = "http://content.screencast.com/users/JamesMontemagno/folders/Jing/media/23c1dd13-333a-459e-9e23-c3784e7cb434/2016-06-02_1049.png", Name = "Woodland Park Zoo" }, new Zoo { ImageUrl = "http://content.screencast.com/users/JamesMontemagno/folders/Jing/media/6b60d27e-c1ec-4fe6-bebe-7386d545bb62/2016-06-02_1051.png", Name = "Cleveland Zoo" }, new Zoo { ImageUrl = "http://content.screencast.com/users/JamesMontemagno/folders/Jing/media/e8179889-8189-4acb-bac5-812611199a03/2016-06-02_1053.png", Name = "Phoenix Zoo" } }; } } public partial class MainPage : ContentPage { public CarouselViewModel viewModel; public MainPage() { InitializeComponent(); this.BindingContext = viewModel = new CarouselViewModel(); } }