ItextSharper PDF到Html转换

Question

我应该将PDF文件转换为Html文件。我正在使用itextSharper对库进行编码。我找到了关于它的代码，但是这个代码只能用PDF格式转换文本。我需要转换所有页面（图像表和其他东西）我该怎么做。

这是我的代码：

  using System.IO;
  using iTextSharp.text.pdf; 
  using iTextSharp.text.pdf.parser;

public class PdfToHtmlManager
{
    public string ConvertPdf(string inputFileName, string outputFileName)
    {
        if (string.IsNullOrEmpty(inputFileName) || string.IsNullOrEmpty(outputFileName))
        {
            return "File name error";
        }
        else if (!File.Exists(inputFileName)) 
        {
            return "File is not exist";
        }
        else 
        {
            PdfReader pr = new PdfReader(inputFileName); 

            int maxPage = pr.NumberOfPages;
            pr.Close();
            StreamWriter outFile = new StreamWriter(outputFileName, true, System.Text.Encoding.UTF8);

            int page = 1;

            while (page<=maxPage)
            {
                ITextExtractionStrategy its = new SimpleTextExtractionStrategy();
                PdfReader reader = new PdfReader(inputFileName);

                outFile.Write(PdfTextExtractor.GetTextFromPage(reader, page, its));
                reader.Close();
                page++;

            }

            outFile.Close();
        }
        return "success";
    }

}