C# 读取 带 xmlns 命名空间 XML 结点 SelectSingleNode 类 For .NET Framework 1.1x AutoPrefix(System.Xml.XmlNode xNode, System.Xml.XmlNamespaceManager xNameSpaceManager) AutoXPath(System.Xml.XmlNode xNode, string xPath, System.Xml.XmlNamespaceManager xNameSpaceManager) AutoSelectSingleNode(System.Xml.XmlNode xNode, string xPath, System.Xml.XmlNamespaceManager xNameSpaceManager) AutoSelectNodes(System.Xml.XmlNode xNode, string xPath, System.Xml.XmlNamespaceManager xNameSpaceManager)