C# Barcode ve Qrcode Oluşturma

private void btnbarcode_Click(object sender, EventArgs e)
        {
            Zen.Barcode.Code128BarcodeDraw barcode = Zen.Barcode.BarcodeDrawFactory.Code128WithChecksum;
            pictureBox1.Image = barcode.Draw(txtbarcode.Text, 50);
        }
        //https://www.bilisimogretmeni.com/
        private void btnqrcode_Click(object sender, EventArgs e)
        {
            Zen.Barcode.CodeQrBarcodeDraw qrcode = Zen.Barcode.BarcodeDrawFactory.CodeQr;
            pictureBox1.Image = qrcode.Draw(txtqrcode.Text, 50);
        }