Adding HTML to a pdf partway through creating a PDF using pdfHtml

Question

I am generating a PDF from data that is not HTML based, and I have HTML that data that I want to insert part way through creating the PDF i.e.

[Non HTML]
[HTML]

[Non HTML]
[HTML]

....


public class CreatePDF 
{
    private Document _document;

    private const int FontSizeHeading2 = 12;
    
    private void RegisterFonts()
    {
        // register non standard fonts....
    }

    public MemoryStream GeneratePDF(DataSet Data)
    {
        using (MemoryStream buffer = new MemoryStream())
        {
            using (PdfDocument document = new PdfDocument(new PdfWriter(buffer)))
            {
                RegisterFonts();
                foreach (DataRow row in Data.Tables[0])
                {
                    Text text = new Text(Text).SetFont(_fontRegular).SetFontSize(FontSizeHeading2);
        Paragraph title = new Paragraph(row.Field<string>("Heading"));

                    /* Insert HTML content here - note this is just what 
                       can be rendered, I am not looking for a faithful rendered. I just want the content displayed */
            }
        }
    }

}

I am using iText to generate the PDF so using the pdfHTML plugin seemed a logical choice. However, pdfHTML closes the document/stream. The only way round it (as far as I can ascertain) is to create a PDF, hold it in memory and then add merge the two PDFs. Is there a way that I can add the HTML content to the PDF without having to merge the documents?

You may consider using iText layout module for generating [Non HTML Text] and then it's very straightforward to embed [HTML] part with HtmlConverter.convertToElements from pdfHtml. — vitalipr
– vitalipr, Commented Oct 29 at 5:43
Not quite sure what you mean. However, I will edit my question to further clarify — Emma Harris
– Emma Harris, Commented Oct 29 at 12:01

vitalipr · Accepted Answer · 2025-11-03 05:50:06Z

2

Please, check this sample on how to use pdfHtml ConvertToElements, this is exactly what you are asking for. https://github.com/itext/itext-publications-samples-dotnet/blob/develop/itext/itext.publications/itext.publications.htmlsamples/itext/samples/htmlsamples/chapter07/C07E02_CombineHtml2.cs

answered Nov 3 at 5:50

vitalipr

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