Error convertoring HTML to XHTML: System.Exception: System.Exception: 发生类型为 System.OutOfMemoryException 的异常。 Referenced on line 1153, position 37 of internal entity 'HTML' at FreeTextBoxControls.Support.Sgml.SgmlDtd.Parse(Uri baseUri, String name, String pubid, TextReader input, String subset, String proxy, XmlNameTable nt) at FreeTextBoxControls.Support.Sgml.SgmlReader.LazyLoadDtd(Uri baseUri)//FreeTextBoxControls.Support.SgmlReader.Resources.Html.dtd\\ at FreeTextBoxControls.Support.Sgml.SgmlReader.LazyLoadDtd(Uri baseUri) at FreeTextBoxControls.Support.Sgml.SgmlReader.OpenInput() at FreeTextBoxControls.Support.Sgml.SgmlReader.Read() at System.Xml.XmlWriter.WriteNode(XmlReader reader, Boolean defattr) at FreeTextBoxControls.Support.Formatter.HtmlToXhtml(String input)