namespace System.Xml { public static class XmlDocumentXPathExtensions { public static XmlNodeList SelectNodes(this XmlNode node, string xpath); public static XmlNodeList SelectNodes(this XmlNode node, string xpath, XmlNamespaceManager nsmgr); public static XmlNode SelectSingleNode(this XmlNode node, string xpath); public static XmlNode SelectSingleNode(this XmlNode node, string xpath, XmlNamespaceManager nsmgr); public static XPathNavigator CreateNavigator(this XmlNode node); public static IXPathNavigable ToXPathNavigable(this XmlNode node); public static XPathNavigator CreateNavigator(this XmlDocument document); public static XPathNavigator CreateNavigator(this XmlDocument document, XmlNode node); } }