<Grid.DataContext> <XmlDataProvider Source="daten.xml" XPath="/Root/Categorys/Category/Items/Item" /></Grid.DataContext>
XPath="/Root/Categorys/Category[Name='Hardware']/Items/Item"
<?xml version="1.0" ?><Root> <Categories> <Category Name='Hardware'> <Items> <Item>Std. PC</Item> <Item>Server</Item> </Items> </Category> <Category Name='Software'> <Items> <Item>Winword</Item> <Item>Excel</Item> </Items> </Category> </Categories></Root>
//Root/Categories/Category[@Name='Hardware']/Items/Item