Como: Usar Namespaces para XML na Associação de Dados
Exemplo
Este exemplo mostra como lidar com espaços para nome especificados no seu XML a origem de ligação.
If your XML data has the following XML namespace definition:
<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">
You can use the XmlNamespaceMapping element to map the namespace to a Prefix, as in the following example. You can then use the Prefix to refer to the XML namespace. The ListBox in this example displays the title and dc:date of each item.
<StackPanel.Resources>
<XmlNamespaceMappingCollection x:Key="mapping">
<XmlNamespaceMapping Uri="http://purl.org/dc/elements/1.1/" Prefix="dc" />
</XmlNamespaceMappingCollection>
<XmlDataProvider Source="https://msdn.microsoft.com/subscriptions/rss.xml"
XmlNamespaceManager="{StaticResource mapping}"
XPath="rss/channel/item" x:Key="provider"/>
<DataTemplate x:Key="dataTemplate">
<Border BorderThickness="1" BorderBrush="Gray">
<Grid Width="600" Height="50">
<Grid.RowDefinitions>
<RowDefinition Height="25"/>
<RowDefinition Height="25"/>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Text="{Binding XPath=title}" />
<TextBlock Grid.Row="1" Text="{Binding XPath=dc:date}" />
</Grid>
</Border>
</DataTemplate>
</StackPanel.Resources>
<ListBox
Width="600"
Height="600"
Background="Honeydew"
ItemsSource="{Binding Source={StaticResource provider}}"
ItemTemplate="{StaticResource dataTemplate}"/>
Note that the Prefix you specify does not have to match the one used in the XML source; if the prefix changes in the XML source your mapping still works.
In this particular example, the XML data comes from a web service, but the XmlNamespaceMapping element also works with inline XML or XML data in an embedded file.
Consulte também
Tarefas
Como: Bind to XML Data Using an XMLDataProvider and XPath Queries
Conceitos
Revisão de Associação de Dados