Question

How do I use XPathNavigator.Evaluate ( or other methods in XPathNavigator) to obtain the ISBN value for the following xml input?

<?xml version='1.0'?> <!-- a fragment of a book store inventory database --> <bookstore xmlns:bk='urn:samples'>   <book genre='novel' publicationdate='1997' bk:ISBN='1-861001-57-8'>     <title>Pride And Prejudice</title>     <author>       <first-name>Jane</first-name>       <last-name>Austen</last-name>     </author>     <price>24.95</price>   </book>   <book genre='novel' publicationdate='1992' bk:ISBN='1-861002-30-1'>     <title>The Handmaid's Tale</title>     <author>       <first-name>Margaret</first-name>       <last-name>Atwood</last-name>     </author>     <price>29.95</price>   </book>   <book genre='novel' publicationdate='1991' bk:ISBN='1-861001-57-6'>     <title>Emma</title>     <author>       <first-name>Jane</first-name>       <last-name>Austen</last-name>     </author>     <price>19.95</price>   </book>   <book genre='novel' publicationdate='1982' bk:ISBN='1-861001-45-3'>     <title>Sense and Sensibility</title>     <author>       <first-name>Jane</first-name>       <last-name>Austen</last-name>     </author>     <price>19.95</price>   </book> </bookstore> 

Answer 1

The answer given by amdfan is almost correct. Here’s the correct syntax:

XPathIterator xit = XPathNavigator1.Select('/bookstore/book/@bk:ISBN'); xit.MoveNext(); String value = xit.Current.Value; 

I tested this in VS 2008.