Itextsharp Base64 Embedded Image In Header Not Parsing/showing

Background: I have an editor where I can edit the header and footer of a document in HTML and then merge them into the main document. Base64 Embedded images work perfectly within t

Solution 1:

So i figured out the answer to this. Pipeline processing for the main document did not apply to the writers that built the headers and footers.

I had to setup the tagprocessors, cssresolvers, fonts and pipelines within the pageevent as well. Once this was done, the images were processed and bytes of the processed images were applied to the main document on every pageevent (or pageend)

so my code became

IfMe.UsesHeader Then
            headerElements = New ElementList() 'XMLWorkerHelper.ParseToElementList(Me.HeaderHTML, Nothing)
            headerTable = SetTable(headerElements, Me.HeaderHTML)
            CalculatedHeaderHeight = headerTable.Rows(0).MaxHeights
        EndIfIfMe.UsesFooter Then
            footerElements = New ElementList() 'XMLWorkerHelper.ParseToElementList(Me.HeaderHTML, Nothing)
            footerTable = SetTable(footerElements, Me.FooterHTML)
            CalculatedFooterHeight = footerTable.Rows(0).MaxHeights
        EndIf

where footerElements and headerElements are of type ElementList and the SetTable function is :

PublicFunctionSetTable(ByVal elements As ElementList, ByVal htmlcode AsString) AsPdfPTableDimtagProcessorsAsDefaultTagProcessorFactory = CType(Tags.GetHtmlTagProcessorFactory(), DefaultTagProcessorFactory)
        tagProcessors.RemoveProcessor(HTML.Tag.IMG) ' removethedefaultprocessortagProcessors.AddProcessor(HTML.Tag.IMG, New CustomImageTagProcessor()) ' useournewprocessorDimcssResolverAsICSSResolver = XMLWorkerHelper.GetInstance().GetDefaultCssResolver(True)
        cssResolver.AddCssFile(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "assets/css/pdf.css"), True)

        'SetupFontsDimxmlFontProviderAsXMLWorkerFontProvider = NewXMLWorkerFontProvider(XMLWorkerFontProvider.DONTLOOKFORFONTS)
        xmlFontProvider.RegisterDirectory(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "assets/fonts/"))

        DimcssAppliersAsCssAppliers = NewCssAppliersImpl(xmlFontProvider)

        DimhtmlContextAsHtmlPipelineContext = NewHtmlPipelineContext(cssAppliers)
        htmlContext.SetAcceptUnknown(True)
        htmlContext.SetTagFactory(tagProcessors)

        DimpdfAsElementHandlerPipeline = NewElementHandlerPipeline(elements, Nothing)
        DimhtmlpAsHtmlPipeline = NewHtmlPipeline(htmlContext, pdf)
        DimcssAsCssResolverPipeline = NewCssResolverPipeline(cssResolver, htmlp)

        DimworkerAsXMLWorker = NewXMLWorker(css, True)
        DimpAsXMLParser = NewXMLParser(worker)

        'DimholderTableAsNewPdfPTable({1})
        DimholderTableAsPdfPTable = NewPdfPTable({1})

        holderTable.HorizontalAlignment = Element.ALIGN_LEFTDimholderCellAsNewPdfPCell()
        holderCell.Padding = 0
        holderCell.UseBorderPadding = FalseholderCell.Border = 0

        p.Parse(New MemoryStream(System.Text.Encoding.ASCII.GetBytes(htmlcode)))

        ForEachelAsIElementInelementsholderCell.AddElement(el)
        NextDimholderRowAsNewPdfPRow({holderCell})
        holderTable.Rows.Add(holderRow)
        holderTable.WidthPercentage = 100

        ReturnholderTableEndFunction

And this solved my problem