I had a demo for list view to display menu having parent and child. I simply added items into list view, but the result is only parent item is showing. How can I get to show my list view including both parent and children items?
My debug result is having 2 child items in parent. But can’t display. Is it binding problem?

<Page.Resources>
<DataTemplate x:Key="ParentDataTemplate">
    <TextBlock Text="{Binding Name}" FontWeight="Bold" FontSize="14"/>
</DataTemplate>

<DataTemplate x:Key="ChildDataTemplate">
    <TextBlock Text="{Binding Name}" Margin="20,0,0,0"/>
</DataTemplate>

<local:MenuItemTemplateSelector x:Key="MenuItemTemplateSelector"
                                ParentTemplate="{StaticResource ParentDataTemplate}"
                                ChildTemplate="{StaticResource ChildDataTemplate}"/>
</Page.Resources>
<Grid>
<muxc:ListView x:Name="nestedListView" ItemTemplateSelector="{StaticResource MenuItemTemplateSelector}">
    <muxc:ListView.ItemContainerStyle>
        <Style TargetType="muxc:ListViewItem">
            <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
        </Style>
    </muxc:ListView.ItemContainerStyle>

    <muxc:ListView.ItemsPanel>
        <ItemsPanelTemplate>
            <ItemsWrapGrid Orientation="Vertical" MaximumRowsOrColumns="2"/>
        </ItemsPanelTemplate>
    </muxc:ListView.ItemsPanel>
</muxc:ListView>
</Grid>

this is my cs code.

    public MainPage()
    {
        this.InitializeComponent();
        // Creating a parent item
        MenuItem parentItem = new MenuItem
        {
            Name = "Parent Item 1"
        };

        // Creating child items
        MenuItem childItem1 = new MenuItem { Name = "Child Item 1" };
        MenuItem childItem2 = new MenuItem { Name = "Child Item 2" };

        // Adding child items to the parent
        parentItem.Children.Add(childItem1);
        parentItem.Children.Add(childItem2);

        MenuItemViewModel viewModel = new MenuItemViewModel();
        viewModel.MenuItems.Add(parentItem);

        nestedListView.ItemsSource = viewModel.MenuItems;
    }
}

public class MenuItem
{
    public string Name { get; set; }
    public ObservableCollection<MenuItem> Children { get; set; } = new ObservableCollection<MenuItem>();
}

public class MenuItemViewModel
{
    public ObservableCollection<MenuItem> MenuItems { get; } = new ObservableCollection<MenuItem>();
}

public class MenuItemTemplateSelector : DataTemplateSelector
{
    public DataTemplate ParentTemplate { get; set; }
    public DataTemplate ChildTemplate { get; set; }

    protected override DataTemplate SelectTemplateCore(object item, DependencyObject container)
    {
        if (item is MenuItem menuItem)
        {
            return menuItem.Children.Count > 0 ? ChildTemplate : ParentTemplate;
        }
        return base.SelectTemplateCore(item, container);
    }
}