Штрих-код Zen с символами

 private void btnBarcode_Click(object sender, EventArgs e)
        {
            Zen.Barcode.Code128BarcodeDraw barcode = Zen.Barcode.BarcodeDrawFactory.Code128WithChecksum;
            var barcodeImage = barcode.Draw(txtBarcode.Text, 50);
 
            var resultImage = new Bitmap(pictureBox.Width, barcodeImage.Height + 20); // 20 is bottom padding, adjust to your text
            using (var graphics = Graphics.FromImage(resultImage))
 
            using (var font = new Font("Consolas", 12))
            using (var brush = new SolidBrush(Color.Black))
            using (var format = new StringFormat()
            {
                Alignment = StringAlignment.Center, // Also, horizontally centered text, as in your example of the expected output
                LineAlignment = StringAlignment.Far
            })
            {
                graphics.Clear(Color.White);
                graphics.DrawImage(barcodeImage, 0, 0);
                graphics.DrawString(txtBarcode.Text, font, brush, resultImage.Width / 2, resultImage.Height, format);
            }
 
            pictureBox.Image = resultImage;

using ZXing;
.............
   private void btnBarcode_Click(object sender, EventArgs e)
        {
 
            BarcodeWriter writer = new BarcodeWriter() { Format = BarcodeFormat.CODE_128 };
            pictureBox.Image = writer.Write(txtBarcode.Text);
 
        }
.......