System.Xml.DocumentXPathNavigator.OwnerNode C# (CSharp) Méthode

        private static XmlNode OwnerNode(XmlNode node) {
            XmlNode parent = node.ParentNode;
            if (parent != null) {
                return parent;
            }
            XmlAttribute attribute = node as XmlAttribute;
            if (attribute != null) {
                return attribute.OwnerElement;
            }
            return null;
        }