Add barcode to header?

[Tommie78]

Hello, I've successfully followed your online tutorial to add a header.

However, I want to add a barcode to the header. How can I achieve that since a PdfUnidimensionalBarcode only allows to draw itself onto a PdfPageBase. PdfPageTemplateElement clearly isn't a PdfPageBase.

Thanks,
Tommie

[Elena.Zhang]

Hello,

Thanks for your inquiry.
You can convert the barcode to an image and then draw this image to the header. Below is the corresponding code for your reference. Feel free to contact us if you have further questions.

Code: Select all

        static void Main(string[] args)
        {
            PdfDocument doc = new PdfDocument();
            PdfPageBase page=doc.Pages.Add();

            //set pdf margins
            PdfMargins margins = new PdfMargins(60, 25, 60, 60);
            doc.PageSettings.Margins = margins;

            PdfPageTemplateElement pdfPageTemplateElement = CreateHeaderTemplate(page, margins);
            doc.Template.Top = pdfPageTemplateElement;

            doc.SaveToFile("PdfHeader.pdf");
            System.Diagnostics.Process.Start("PdfHeader.pdf");
        }
     
        static PdfPageTemplateElement CreateHeaderTemplate( PdfPageBase page, PdfMargins margins)
        {
            SizeF pageSize = page.Size;
            PdfPageTemplateElement headerSpace = new PdfPageTemplateElement(pageSize.Width, margins.Top);
            headerSpace.Foreground = false;
            //draw picture in headerSpace
            Image image=creatBarcode();
            PdfImage headerImage = PdfImage.FromImage(image);
            float width = headerImage.Width / 2;
            float height = headerImage.Height / 2;
            headerSpace.Graphics.DrawImage(headerImage, margins.Left, 10, width, height);
            return headerSpace;
        }
        static Image creatBarcode()
        {
            PdfCode11Barcode barcode2 = new PdfCode11Barcode("123-4567890");
            barcode2.BarcodeToTextGapHeight = 1f;
            barcode2.TextDisplayLocation = TextLocation.Bottom;
            barcode2.TextColor = Color.Blue;
            return barcode2.ToImage();
        }


Sincerely,
Elena
E-iceblue support team

[Tommie78]

Thanks for your response, however when exporting to an image, I lose the vectorization aspect.
I've solved it by stamping the barcode on each page in a post processing step.

[Elena.Zhang]

Hello,

Thanks for your feedback.
If you encounter any issues related to our product in the future, just feel free to contact us.
Have a nice day!

Sincerely,
Elena
E-iceblue support team