Html在itextsharp中解析并将其添加到Paragraph中？

Question

Paragraph CommentsofExaminerData = new Paragraph();
if (DTO.QuestionComment != null)
{
    CommentsofExaminerData = new Paragraph(DTO.QuestionComment, fontH2);
}

cell1 = new PdfPCell(new Paragraph(CommentsofExaminerData));

我在DTO.QuestionComment中有html richtextbox值，我想转换为html格式。

如何解析数据？