Encode Barcode as PDF

using Opait.Barcoder.Api;

// Encodes a message as QR-Code and saves as a PDF file.
static void EncodePdfBarcode(string message, string fileName)
{
    // Initialize the barcoder library with default options.
    var barcoder = new Barcoder();

    // Create a barcode encoder of the specified type and content.
    var encoder = barcoder.CreateEncoder(BarcodeType.QRCode, message);

    // Create a PDF renderer for saving the generated barcode.
    var renderer = barcoder.CreatePdfRenderer();

    // Create a new PDF document.
    using (var pdf = barcoder.CreatePdfDocument())
    {
        // Add a new page to the document.
        var page = pdf.AddPage();

        // Place the barcode in the middle of the page.
        renderer.RenderBarcode(page, encoder, page.Width / 2 - 100, page.Height / 2 - 100, 200, 200);

        // Save the PDF file.
        pdf.Save(fileName);
    }
}