问如何在expression blend中使用ListBoxItems？

EN

        <ListBox x:Name="myItems">
            <ListBox.ItemTemplate>
                <DataTemplate >
                    <StackPanel Orientation="Horizontal">
                        <Image Source="{Binding image}" Margin="5" />
                        <TextBlock Text="{Binding myName}" VerticalAlignment="Center" />
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

public partial class MainPage : PhoneApplicationPage
{
    ObservableCollection<dataItem> items;

    public MainPage()
    {
        InitializeComponent();
        items = new ObservableCollection<dataItem>();
        addItems();
        this.myItems.ItemsSource = items;
    }

    private void addItems()
    {
        items.Add(new dataItem() { myName = "Jason", image = "1.png" });
        items.Add(new dataItem() { myName = "Joanne", image = "2.png" });
    }
}

public class dataItem : INotifyPropertyChanged
{

    private string _name = "";
    public string myName
    {
        get
        {
            return _name;
        }
        set
        {
            if (value != _name)
            {
                _name = value;
                NotifyPropertyChanged("myName");
            }
        }
    }

    private string _image = "";
    public string image
    {
        get
        {
            return _image;
        }
        set
        {
            if (_image != value)
                _image = value;
            NotifyPropertyChanged("image");
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;
    public void NotifyPropertyChanged(string propertyName)
    {
        PropertyChangedEventHandler handler = PropertyChanged;
        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}