C# Wpf简单的listviewitem事件绑定将不起作用

<ListView x:Name="myListView">
    <ListView.ItemTemplate>
        <DataTemplate>
            <StackPanel>
                <!-- 在这里定义ListViewItem的内容 -->
            </StackPanel>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

public class MyData
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public ObservableCollection<MyData> MyDataSource { get; set; } = new ObservableCollection<MyData>();

myListView.ItemsSource = MyDataSource;

myListView.SelectionChanged += MyListView_SelectionChanged;

private void MyListView_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    if (myListView.SelectedItem != null)
    {
        // 处理选中的ListViewItem
        MyData selectedData = (MyData)myListView.SelectedItem;
        // 其他操作...
    }
}