如何在xamarin表单中读取listview中的控件值？

// 数据模型类
public class ItemModel : INotifyPropertyChanged
{
    private string _value;
    public string Value
    {
        get { return _value; }
        set
        {
            if (_value != value)
            {
                _value = value;
                OnPropertyChanged();
            }
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

// 在Xamarin.Forms页面中的代码
public partial class MainPage : ContentPage
{
    private List<ItemModel> itemList;

    public MainPage()
    {
        InitializeComponent();

        // 初始化数据源
        itemList = new List<ItemModel>
        {
            new ItemModel { Value = "Item 1" },
            new ItemModel { Value = "Item 2" },
            new ItemModel { Value = "Item 3" }
        };

        // 绑定ListView的ItemSource
        listView.ItemsSource = itemList;
    }

    private void ListView_ItemSelected(object sender, SelectedItemChangedEventArgs e)
    {
        // 获取选中的数据模型对象
        var selectedItem = e.SelectedItem as ItemModel;

        if (selectedItem != null)
        {
            // 通过选中的数据模型对象获取控件的值
            var value = selectedItem.Value;

            // 在这里可以对获取到的值进行处理
            // ...
        }
    }
}