HTML โปรแกรมดูไฟล์ผ่าน C#

    HtmlLoadOptions options= new HtmlLoadOptions();
    Resolution resolution = new Resolution(300);
    BmpDevice imageDevice = new BmpDevice(resolution);
    Document pdfDocument= new Document(_dataDir + "test.html", options);
    for (int pageCount = 1; pageCount <= pdfDocument.Pages.Count; pageCount++)
    {
        using (FileStream imageStream =
        new FileStream($"{_dataDir}image{pageCount}_out.{ext}", FileMode.Create))
        {
            // Convert a particular page and save the image to stream
            imageDevice.Process(pdfDocument.Pages[pageCount], imageStream);

            // Close stream
            imageStream.Close();
        }
    }