<local:ItemInfo/>
 </ContentPage.BindingContext>
 <CollectionView
     x:Name="collectionView"
     Margin="40"
     HorizontalOptions="Fill"
     ItemsLayout="VerticalGrid, 3"
     VerticalOptions="Fill">
     <CollectionView.Header>
         <ScrollView>
             <ListView x:Name="listView"  HorizontalOptions="Center" 
                ItemsSource="{Binding DataSource}" />
         </ScrollView>
     </CollectionView.Header>
     <CollectionView.ItemTemplate>
         <DataTemplate>
             <Button
                 x:Name="grid"
                 Margin="5"
                 Padding="0"
                 HeightRequest="60"
                 HorizontalOptions="Fill"
                 Text="{Binding .}"
                 VerticalOptions="Center" />
         </DataTemplate>
     </CollectionView.ItemTemplate>
 </CollectionView>

	public MainPage()
	{
		InitializeComponent();
        collectionView.ItemsSource = new ItemInfo().DataSource;
    }

    public class ItemInfo
    {
        private ObservableCollection<object> dataSource = new ObservableCollection<object>()
        {
            "Pink", "Green", "Blue", "Yellow", "Orange", "Purple", "SkyBlue", "PaleGreen"
        };

        public ObservableCollection<object> DataSource
        {
            get => dataSource;
            set => dataSource = value;
        }

        public ItemInfo()
        {

        }
    }