如何在ListView Windows Phone 8.1中更新ListViewItem

public class Item
{
    public string Name { get; set; }
    public string Description { get; set; }
}

<ListView x:Name="myListView">
    <ListView.ItemTemplate>
        <DataTemplate>
            <StackPanel>
                <TextBlock Text="{Binding Name}" />
                <TextBlock Text="{Binding Description}" />
            </StackPanel>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

public ObservableCollection<Item> Items { get; set; }

public MainPage()
{
    InitializeComponent();
    Items = new ObservableCollection<Item>();
    myListView.ItemsSource = Items;
}

// 更新第一个项的属性值
Items[0].Name = "New Name";
Items[0].Description = "New Description";