条形码在生活中使用的已经相当广泛了，不管是去书店买书，还是去超市买商品，都会用到条码，而且每一个条码中的信息都不尽相同，每一类的商品都有统一的条 码，当然条码的类型也有不同，比如有标准的UPC条码，也有Code39，Code128，EAN8等等好多好多。这些根据不同的需要而被广泛使用。

      最近根据项目的需求，用了一段时间对一维码、二维码进行了小小的研究，在一篇Blog中看到使用了google的zxing生成二维码，好奇之下自己做了一个小Demo。

生成一维码

生成二维码

#region 引用程序集  
using System;  
using System.Collections.Generic;  
using System.ComponentModel;  
using System.Data;  
using System.Drawing;  
using System.Linq;  
using System.Text;  
using System.Threading.Tasks;  
using System.Windows.Forms;  
using com.google.zxing.qrcode;  
using com.google.zxing;  
using com.google.zxing.common;  
using ByteMatrix = com.google.zxing.common.ByteMatrix;  
using EAN13Writer = com.google.zxing.oned.EAN13Writer;  
using EAN8Writer = com.google.zxing.oned.EAN8Writer;  
using MultiFormatWriter = com.google.zxing.MultiFormatWriter;  
#endregion  
  
namespace qr  
{  
    public partial class Form1 : Form  
    {  
        public Form1()  
        {  
            // 初始化组件  
            InitializeComponent();  
        }  
  
        //  public static void writeToFile(ByteMatrix matrix, System.Drawing.Imaging.ImageFormat format, string file)  
        //{  
        //    Bitmap bmap = toBitmap(matrix);  
        //    bmap.Save(file, format);  
        //}  
        /// <summary>  
        /// 绘制一维码、二维码位图  
        /// </summary>  
        /// <param name="matrix"></param>  
        /// <returns></returns>  
        public static Bitmap toBitmap(ByteMatrix matrix)     
        {  
            // 定义位图的款和高  
            int width = matrix.Width;  
            int height = matrix.Height;     
              
            Bitmap bmap = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);     
            for (int x = 0; x < width; x++)     
            {     
                for (int y = 0; y < height; y++)     
                {     
                    bmap.SetPixel(x, y, matrix.get_Renamed(x, y) != -1 ? ColorTranslator.FromHtml("0xFF000000") : ColorTranslator.FromHtml("0xFFFFFFFF"));     
                }     
            }     
            return bmap;                 
        }  
  
        private void button1_Click_1(object sender, EventArgs e)  
        {  
            string content = textBox1.Text;  
            int codeWidth = Convert.ToInt16(txtWidth.Text.Trim().ToString());  
            int codeHeight = Convert.ToInt16(txtHeight.Text.Trim().ToString());  
            // 生成二维码  
            ByteMatrix byteMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, codeWidth, codeHeight);  
            Bitmap bitmap = toBitmap(byteMatrix);  
            pictureBox1.Image = bitmap;  
            //writeToFile(byteMatrix, System.Drawing.Imaging.ImageFormat.Png, sFD.FileName);  
            //SaveFileDialog sFD = new SaveFileDialog();  
            //sFD.DefaultExt = "*.png|*.png";  
            //sFD.AddExtension = true;  
            //try  
            //{  
            //    if (sFD.ShowDialog() == DialogResult.OK)  
            //    {  
  
            //    }  
            //}  
            //catch (Exception ex)  
            //{  
            //    MessageBox.Show(ex.Message);  
            //}  
        }  
  
        private void button2_Click(object sender, EventArgs e)  
        {  
            string content = textBox1.Text;  
            // 生成一维码  
            ByteMatrix byteMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.EAN_8, 200, 100);  
            Bitmap bitmap = toBitmap(byteMatrix);  
            pictureBox1.Image = bitmap;  
              
            //Bitmap twobitmap = new Bitmap(bitmap.Width ,bitmap.Height);  
            //Graphics g = Graphics.FromImage(bitmap);  
            //g.DrawString(content, Font, Brushes.Black, pictureBox1.);  
            //pictureBox1.Image = bitmap;  
              
        }   
    }  
}  

来自：http://blog.csdn.net/happylee6688/article/details/8446203