<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Czytnik RSS">
  <Window.Resources>
    <XmlDataProvider x:Key="Feed"
    Source="http://api.twitter.com/1/statuses/user_timeline.rss?screen_name=adamnathan"/>
  </Window.Resources>
  <DockPanel
  DataContext="{Binding Source={StaticResource Feed}, XPath=/rss/channel/item}">
    <TextBox DockPanel.Dock="Top" Text="{Binding Source={StaticResource Feed},
BindsDirectlyToSource=true, Path=Source,
UpdateSourceTrigger=PropertyChanged}"/>
    <Label DockPanel.Dock="Top" Content="{Binding XPath=/rss/channel/title}"
           FontSize="14" FontWeight="Bold"/>
    <Label DockPanel.Dock="Top"
    Content="{Binding XPath=/rss/channel/description}"/>
    <ListBox DockPanel.Dock="Left" DisplayMemberPath="title"
    ItemsSource="{Binding}" IsSynchronizedWithCurrentItem="True" Width="300"/>
    <Frame Source="{Binding XPath=link}"/>
  </DockPanel>
</Window>