关于itextsharp 实现html转pdf

private void HtmlToPDF(string HtmlPath,string  PdfPath)
        {
           
            Document document = new Document(PageSize.A4, 80, 50, 30, 65);
       
            try
            {
        


             

               
                PdfWriter.GetInstance(document, new FileStream(PdfPath, FileMode.Create));

                HtmlParser.Parse(document, HtmlPath);

                document.Close();
            }

catch(Exception e)
{
               
                document=null;
throw e;
} 
}
现在已经实现了 但是不能转换中文