C#

public class MenuHeaderItem
{
    public string HeaderName { get; set; }
    public IReadOnlyList<MenuHeaderItem> Children { get; set; }
}

public static IReadOnlyList<MenuHeaderItem> LoadMenu(XDocument document)
{
    var result = new List<MenuHeaderItem>();
    var allHeaders = document.Descendants("Header");
    foreach (XElement node in allHeaders)
    {
        result.Add(new MenuHeaderItem
        {
            HeaderName = (string)node.Attribute("Value"),
            Children = node.Elements().Select(el => new MenuHeaderItem 
            {
                HeaderName = (string)el,
            }).ToList(),
        });
    }
    
    return result;
}

private static readonly DependencyPropertyKey MenuHeadersKey = DependencyProperty.RegisterReadOnly(
    "MenuHeaders",
    typeof(IReadOnlyList<MenuHeaderItem>),
    typeof(YourContainingClass),
    new PropertyMetadata(null)
);

public static readonly DependencyProperty MenuHeadersProperty = MenuHeadersKey.DependencyProperty;

public IReadOnlyList<MenuHeaderItem> MenuHeaders
{
    get { return (IReadOnlyList<MenuHeaderItem>)GetValue(MenuHeadersProperty); }
    private set { SetValue(MenuHeadersKey, value); }
}

private void LoadHeaders()
{
    if (File.Exists("MenuHeaders.xml"))
    {
        XDocument document = XDocument.Load("MenuHeaders.xml");
        MenuHeaders = LoadMenu(document);
    }
}

<Menu ItemsSource="{Binding Path=MenuHeaders}">
    <Menu.ItemContainerStyle>
        <Style TargetType="{x:Type MenuItem}">
            <Setter Property="Header" Value="{Binding Path=HeaderName}" />
            <Setter Property="ItemsSource" Value="{Binding Path=Children}" />
            
            <!-- Handle the menu click event: -->
            <Setter Property="Command" Value="{Binding Path=MenuClickCommand}" />
            <Setter Property="CommandParameter" Value="{Binding Path=HeaderName}" />
        </Style>
    </Menu.ItemContainerStyle>
</Menu>

static int CountOccurrences(string text, char digit)

    int count = 0; // use a separate counter for the number of matches
    
    for (int i=0 ; i < text.Length; i++)
    {
        if (text[i] == digit)
        {
            count++;
        }
    }
    return count;
}

Member 7989122 wrote:

"hen" as as common term for "han" and "hun".

Richard MacCutchan wrote:

Try calling a girl "hen" in Glasgow.