See Also: XPathNodeIterator Members
XPath allows the application to execute the query by walking through the canidate nodes. As you advance the iterator, the engine evaluates successive nodes, until it reaches one that satisfies the query. At this point, control returns to the application.
Namespace: System.Xml.XPath
Assembly: System.Xml (in System.Xml.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0