System.Xml.XPath.XPathNavigator.CreateContextReader C# (CSharp) Method

        private XmlReader CreateContextReader(string xml, bool fromCurrentNode)
        {
            if (xml == null)
            {
                throw new ArgumentNullException(nameof(xml));
            }

            // We have to set the namespace context for the reader.
            XPathNavigator editor = CreateNavigator();
            // scope starts from parent.
            XmlNamespaceManager mgr = new XmlNamespaceManager(NameTable);
            if (!fromCurrentNode)
            {
                editor.MoveToParent(); // should always succeed.
            }
            if (editor.MoveToFirstNamespace(XPathNamespaceScope.All))
            {
                do
                {
                    mgr.AddNamespace(editor.LocalName, editor.Value);
                }
                while (editor.MoveToNextNamespace(XPathNamespaceScope.All));
            }
            // BUGBUG: How can we preserve the whitespace setting
            XmlParserContext context = new XmlParserContext(NameTable, mgr, null, XmlSpace.Default);
            XmlTextReader reader = new XmlTextReader(xml, XmlNodeType.Element, context);
            // BUGBUG: Whitespace handling??
            reader.WhitespaceHandling = WhitespaceHandling.Significant;
            return reader;
        }