System.Xml.XmlReader.WriteNode C# (CSharp) Method

        private void WriteNode(XmlWriter xtw, bool defattr)
        {
            Debug.Assert(xtw is XmlTextWriter);
            int d = this.NodeType == XmlNodeType.None ? -1 : this.Depth;
            while (this.Read() && (d < this.Depth))
            {
                switch (this.NodeType)
                {
                    case XmlNodeType.Element:
                        xtw.WriteStartElement(this.Prefix, this.LocalName, this.NamespaceURI);
                        ((XmlTextWriter)xtw).QuoteChar = this.QuoteChar;
                        xtw.WriteAttributes(this, defattr);
                        if (this.IsEmptyElement)
                        {
                            xtw.WriteEndElement();
                        }
                        break;
                    case XmlNodeType.Text:
                        xtw.WriteString(this.Value);
                        break;
                    case XmlNodeType.Whitespace:
                    case XmlNodeType.SignificantWhitespace:
                        xtw.WriteWhitespace(this.Value);
                        break;
                    case XmlNodeType.CDATA:
                        xtw.WriteCData(this.Value);
                        break;
                    case XmlNodeType.EntityReference:
                        xtw.WriteEntityRef(this.Name);
                        break;
                    case XmlNodeType.XmlDeclaration:
                    case XmlNodeType.ProcessingInstruction:
                        xtw.WriteProcessingInstruction(this.Name, this.Value);
                        break;
                    case XmlNodeType.DocumentType:
                        xtw.WriteDocType(this.Name, this.GetAttribute("PUBLIC"), this.GetAttribute("SYSTEM"), this.Value);
                        break;
                    case XmlNodeType.Comment:
                        xtw.WriteComment(this.Value);
                        break;
                    case XmlNodeType.EndElement:
                        xtw.WriteFullEndElement();
                        break;
                }
            }
            if (d == this.Depth && this.NodeType == XmlNodeType.EndElement)
            {
                Read();
            }
        }