System.Xml.DocumentXPathNavigator.MoveToParent C# (CSharp) Method

        public override bool MoveToParent() {
            XmlNode parent = ParentNode(source);
            if (parent != null) {
                source = parent;
                return true;
            }
            XmlAttribute attribute = source as XmlAttribute;
            if (attribute != null) {
                parent = attribute.IsNamespace ? namespaceParent : attribute.OwnerElement;
                if (parent != null) {
                    source = parent;
                    namespaceParent = null;
                    return true;
                }
            }
            return false;
        }