BarCodeSamplePrinter

public String PrinterName { get; set; }

public CouponPrinter(String printerName)
{
    PrinterName = printerName;
}

public void PrintReceiptForTransaction()
{
    PrintDocument recordDoc = new PrintDocument();

    recordDoc.DocumentName = "Receipt";
    recordDoc.PrintPage += new PrintPageEventHandler(CouponPrinter.PrintReceiptPage); 
    recordDoc.PrintController = new StandardPrintController();

    PrinterSettings ps = new PrinterSettings();

    ps.PrinterName = PrinterName;
    recordDoc.PrinterSettings = ps;
    recordDoc.Print();

    recordDoc.Dispose();
}

private static void PrintReceiptPage(object sender, PrintPageEventArgs e)
{
    string transactionId = "038000356216";

    float x = 10;
    float y = 5;
    float width = 260.0F; // max width I found through trial and error
    float height = 0F;

    Font drawFontArial12Bold = new Font("Arial", 12, FontStyle.Bold);
    Font drawFontArial10Regular = new Font("Arial", 10, FontStyle.Regular);
    Font drawFontArial7Regular = new Font("Arial", 7, FontStyle.Regular);
    SolidBrush drawBrush = new SolidBrush(Color.Black);

    // Set format of string.
    StringFormat drawFormatCenter = new StringFormat();
    drawFormatCenter.Alignment = StringAlignment.Center;
    StringFormat drawFormatLeft = new StringFormat();
    drawFormatLeft.Alignment = StringAlignment.Near;
    StringFormat drawFormatRight = new StringFormat();
    drawFormatRight.Alignment = StringAlignment.Far;

    // Draw string to screen.
    string text = "Company Name";
    e.Graphics.DrawString(text, drawFontArial12Bold, drawBrush, new RectangleF(x, y, width, height), drawFormatCenter);
    y += e.Graphics.MeasureString(text, drawFontArial12Bold).Height;

    // Generate Bar Code
    Bitmap barcode = generateBarCode(transactionId);

    float barcodeWidth = x + (width / 2) - (barcode.Width / 2);
    e.Graphics.DrawImage(barcode, new Rectangle((int)barcodeWidth, (int)y, barcode.Width, barcode.Height));
    y += barcode.Height;

    // Print Barcode Number underneath
    text = transactionId;
    e.Graphics.DrawString(text, drawFontArial7Regular, drawBrush, new RectangleF(x, y, width, height), drawFormatCenter);
    y += e.Graphics.MeasureString(text, drawFontArial7Regular).Height;
}


private static Bitmap generateBarCode(string code)
{
    BarcodeLib.Barcode b = new BarcodeLib.Barcode();
    b.Alignment = BarcodeLib.AlignmentPositions.CENTER;
    Image img = b.Encode(BarcodeLib.TYPE.UPCA, code, Color.Black, Color.White, 100, 25);
    return new Bitmap(img);
}