WPF combobox does not show values at runtime - wpf

Question

I am a newbie with WPF.
I have a combobox bound to an XML datasource defined in the Window.Resources.
The combobox values are shown in the designer, but it comes out empty at runtime.
Am I missing something here.
<Window x:Class="WpfExample4.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<XmlDataProvider x:Key="xmlData">
<x:XData>
<customers>
<customer name="Customer 1">
<order desc="Big Order">
<orderDetail product="Glue" quantity="21" />
<orderDetail product="Fudge" quantity="32" />
</order>
</customer>
<customer name="Customer 2">
<order desc="First Order">
<orderDetail product="Mousetrap" quantity="4" />
</order>
</customer>
</customers>
</x:XData>
</XmlDataProvider>
</Window.Resources>
<Grid DataContext= "{Binding Source={StaticResource xmlData}, XPath=customers/customer}" Margin="4" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<!-- CUSTOMERS -->
<DockPanel Grid.Row="0">
<TextBlock DockPanel.Dock="Top" FontWeight="Bold" Text="Customers" />
<ComboBox IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding}" >
<ComboBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding XPath=#name}" />
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
</DockPanel>
</Grid>
</Window>

Answer 1

You should add namespace to root element (msdn).
Note:
The root node of the XML data has an xmlns attribute that sets the XML
namespace to an empty string. This is a requirement for applying XPath
queries to a data island that is inline within the XAML page. In this
inline case, the XAML, and thus the data island, inherits the
System.Windows namespace. Because of this, you need to set the
namespace blank to keep XPath queries from being qualified by the
System.Windows namespace, which would misdirect the queries.
...
<Window.Resources>
<XmlDataProvider x:Key="xmlData">
<x:XData>
<customers xmlns="">
<customer name="Customer 1">
<order desc="Big Order">
<orderDetail product="Glue" quantity="21" />
<orderDetail product="Fudge" quantity="32" />
</order>
</customer>
...