<ResourceDictionary
  xmlns="http://schemas.microsoft.com/client/2007"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:uriMapper="clr-namespace:System.Windows.Navigation;assembly=Microsoft.Phone">

    <uriMapper:UriMapper x:Key="ApplicationUriMapper">
        <uriMapper:UriMapper.UriMappings>
            <uriMapper:UriMapping Uri="/Main" MappedUri="/MainPage.xaml" />
            <uriMapper:UriMapping Uri="/Other" MappedUri="/OtherPage.xaml?text=Default" />
            <uriMapper:UriMapping Uri="/Other/{text}" MappedUri="/OtherPage.xaml?text={text}" />
        </uriMapper:UriMapper.UriMappings>
    </uriMapper:UriMapper>

</ResourceDictionary>