WPF Listview 访问 SelectedItem 和子项目

使用WPF Listview访问SelectedItem和子项目

xaml
    
        
            
            
            
        
    

csharp
private void Button_Click(object sender, RoutedEventArgs e)
{
    if (myListView.SelectedItem != null)
    {
        var selectedItem = myListView.SelectedItem as MyDataItem;
        // 进一步处理选中项的数据
        MessageBox.Show("Selected item: " + selectedItem.Name);
    }
}

csharp
private void Button_Click(object sender, RoutedEventArgs e)
{
    if (myListView.SelectedItem != null)
    {
        var selectedItem = myListView.SelectedItem as MyDataItem;
        // 访问子项目
        foreach (var childItem in GetVisualChildren(myListView))
        {
            // 处理子项目
            MessageBox.Show("Child item: " + childItem.Text);
        }
    }
}
public static IEnumerable GetVisualChildren(DependencyObject parent) where T : DependencyObject
{
    for (int i = 0; i < VisualTreeHelper.GetChildrenCount(parent); i++)
    {
        var child = VisualTreeHelper.GetChild(parent, i);
        if (child is T typedChild)
        {
            yield return typedChild;
        }
        foreach (var childOfChild in GetVisualChildren(child))
        {
            yield return childOfChild;
        }
    }
}