[WP7] UriMapper.UriMappings

// App.xaml
xmlns:nav="clr-namespace:System.Windows.Navigation;assembly=Microsoft.Phone"

<nav:UriMapper x:Key="UriMapper">
    <nav:UriMapper.UriMappings>
        <nav:UriMapping MappedUri="/Views/Info/Default.xaml?V={Value}"
                       Uri="/Info/{Value}"></nav:UriMapping>
    </nav:UriMapper.UriMappings>
</nav:UriMapper>

// App.xaml.cs
public App()
{
    this.RootFrame.UriMapper = Resources["UriMapper"] as UriMapper;
}