如何在listview xamarin窗体中实现checkbox

public class Item
{
    public string Text { get; set; }
    public bool IsSelected { get; set; }
}

<ListView x:Name="myListView">
    <ListView.ItemTemplate>
        <DataTemplate>
            <ViewCell>
                <StackLayout Orientation="Horizontal">
                    <CheckBox IsChecked="{Binding IsSelected}" />
                    <Label Text="{Binding Text}" />
                </StackLayout>
            </ViewCell>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

ObservableCollection<Item> items = new ObservableCollection<Item>();
myListView.ItemsSource = items;

Item item = new Item() { Text = "Item 1", IsSelected = false };
items.Add(item);

foreach (Item item in items)
{
    if (item.IsSelected)
    {
        // 处理选中的项
    }
}