WPF Menu - Display Vertical Pop up Menu Control

<syncfusion:MenuAdv Height="25" VerticalAlignment="Top">
    <syncfusion:MenuItemAdv Header="Products" />
    <syncfusion:MenuItemAdv Header="Business Intelligence" />
    <syncfusion:MenuItemAdv Header="User Interface" >
        <syncfusion:MenuItemAdv Header="WPF ">
            <syncfusion:MenuItemAdv Header="Tools"/>
            <syncfusion:MenuItemAdv Header="Chart"/>
            <syncfusion:MenuItemAdv Header="Grid"/>
            <syncfusion:MenuItemAdv Header="Diagram"/>
            <syncfusion:MenuItemAdv Header="Gauge"/>
            <syncfusion:MenuItemAdv Header="Schedule"/>
            <syncfusion:MenuItemAdv Header="Edit"/>
        </syncfusion:MenuItemAdv>
        <syncfusion:MenuItemAdv Header="Silverlight "/>
        <syncfusion:MenuItemAdv Header="Reporting" />
    </syncfusion:MenuItemAdv>
</syncfusion:MenuAdv>

using System.Windows;
using Syncfusion.Windows.Tools.Controls;
using Syncfusion.Windows.Shared;
namespace Menu
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            MenuAdv mAdv = new MenuAdv();
            MenuItemAdv product = new MenuItemAdv() { Header = "Products" };
            MenuItemAdv bi = new MenuItemAdv() { Header = "Business Intelligence" };
            MenuItemAdv ui = new MenuItemAdv() { Header = "User Interface" };
            MenuItemAdv wpf = new MenuItemAdv() { Header = "WPF" };
            MenuItemAdv tools = new MenuItemAdv() { Header = "Tools" };
            MenuItemAdv chart = new MenuItemAdv() { Header = "Chart" };
            MenuItemAdv grid = new MenuItemAdv() { Header = "Grid" };
            MenuItemAdv diagram = new MenuItemAdv() { Header = "Diagram" };
            MenuItemAdv gauge = new MenuItemAdv() { Header = "Gauge" };
            MenuItemAdv schedule = new MenuItemAdv() { Header = "Schedule" };
            MenuItemAdv edit = new MenuItemAdv() { Header = "Edit" };
            MenuItemAdv sl = new MenuItemAdv() { Header = "Silverlight" };
            MenuItemAdv reporting = new MenuItemAdv() { Header = "Reporting" };

            wpf.Items.Add(tools);
            wpf.Items.Add(chart);
            wpf.Items.Add(grid);
            wpf.Items.Add(diagram);
            wpf.Items.Add(gauge);
            wpf.Items.Add(schedule);
            wpf.Items.Add(edit);
            ui.Items.Add(wpf);
            ui.Items.Add(sl);
            product.Items.Add(bi);
            product.Items.Add(ui);
            product.Items.Add(reporting);
            mAdv.Items.Add(product);
            this.Content = mAdv;
        }
    }
}