C#条形码添加标题文字

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using ZXing;
using ZXing.Common;
using ZXing.QrCode;
using System.IO;


namespace Jbarcode
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //this.pictureBox1.BackColor = Color.Red;
            //ITF偶数码 MSI长度随意
            EncodingOptions options = new EncodingOptions
            {
                Width = 400,
                Height = 100 
            };
            BarcodeWriter writer = new BarcodeWriter
            {
                //Format = BarcodeFormat.MSI,
                Format = BarcodeFormat.CODE_39,
                Options = options
            };
            Bitmap bitmap = writer.Write("123456");
            Bitmap newbm = KiSetText(bitmap, "1234562222222222222222222222222", 10, 5);
            pictureBox1.Image = newbm;
        }


        public static Bitmap KiSetText(Bitmap b, string txt, int x, int y)
        {
            if (b == null)
            {
                return null;
            }

            Bitmap resizeImage = new Bitmap(b.Width,b.Height + 40);
            Graphics gfx = Graphics.FromImage(resizeImage);
            gfx.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;

            gfx.FillRectangle(Brushes.White, new Rectangle(0,0,400,100));

            gfx.DrawImageUnscaled(b, 0, 40);

            // 作为演示，我们用Arial字体，大小为32，红色。
            FontFamily fm = new FontFamily("Arial");
            Font font = new Font(fm, 24, FontStyle.Regular, GraphicsUnit.Pixel);
            SolidBrush sb = new SolidBrush(Color.Black);

            gfx.DrawString(txt, font, sb, new PointF(x, y));
            gfx.Dispose();

            return resizeImage;
        }


    }
}

生成效果：