How to insert a dynamically generated bitmap into PDF document using PDFsharp?

Question

I am trying to use PDFsharp to insert a dynamically generated bitmap of a QR Code in to a PDF document. I don't want to save the bitmap to the file but just want to insert it into the PDF. The problem I'm having is the DrawImage command is looking for a string where the image file is located. But I don't want to save the file, I just want to insert it into the PDF document. Is there a way of doing this?

var QRCode_BMP = _generalCode.QR_CodeGenerator(AddReviewPath); //This generates the bitmap
MemoryStream streamQR = new MemoryStream();
QRCode_BMP.Save(streamQR, System.Drawing.Imaging.ImageFormat.Jpeg); //save bitmap into memory stream in jpeg format System.Drawing.Image QR_Jpeg = System.Drawing.Image.FromStream(streamQR);// save memory stream to image file
XImage xImage = XImage.FromGdiPlusImage(QR_Jpeg);
gfx = XGraphics.FromPdfPage(page);

DrawImage(gfx, xImage, 0, 0, 100, 100); //This is not working

QRCode_BMP.Dispose();
streamQR.Close();
gfx.Dispose();

Answer 1

This is how I made it work;

        PdfDocument pdf = PdfGenerator.GeneratePdf("<b>some html here</b>", PageSize.A4);

        QRCodeGenerator qrGenerator = new QRCodeGenerator();
        QRCodeData qrCodeData = qrGenerator.CreateQrCode("some text here", QRCodeGenerator.ECCLevel.Q);
        QRCode qrCode = new QRCode(qrCodeData);

        Bitmap qrCodeImage = qrCode.GetGraphic(10);


        PdfPage page = pdf.Pages[0]; //I will add it to 1st page

        // Get an XGraphics object for drawing
        XGraphics gfx = XGraphics.FromPdfPage(page);

        XImage image = XImage.FromGdiPlusImage(qrCodeImage); //you can use XImage.FromGdiPlusImage to get the bitmap object as image (not a stream)
        gfx.DrawImage(image, 50, 50, 150, 150);
//save your pdf, dispose other objects