C#Zxing.net生成条形码和二维码

下载Zxing.net官网：https://archive.codeplex.com/?p=zxingnet

或者去VS程序包下载

封装好的代码：

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Threading.Tasks;
  6 using System.Drawing;
  7 using ZXing;
  8 using ZXing.Common;
  9 using ZXing.QrCode;
 10 using ZXing.QrCode.Internal;
 11 using System.Drawing.Imaging;
 12 
 13 namespace WindowsFormsApplication1
 14 {
 15     public class BarMethHepler
 16     {
 17         /// <summary>
 18         /// 生成二维码
 19         /// </summary>
 20         /// <param name="text">内容</param>
 21         /// <param name="width">宽度</param>
 22         /// <param name="height">高度</param>
 23         /// <returns></returns>
 24         public static Bitmap Generate1(string text, int width, int height)
 25         {
 26             BarcodeWriter writer = new BarcodeWriter();
 27             writer.Format = BarcodeFormat.QR_CODE;
 28             QrCodeEncodingOptions options = new QrCodeEncodingOptions()
 29             {
 30                 DisableECI = true,//设置内容编码
 31                 CharacterSet = "UTF-8",  //设置二维码的宽度和高度
 32                 Width = width,
 33                 Height = height,
 34                 Margin = 1//设置二维码的边距,单位不是固定像素
 35             };
 36 
 37             writer.Options = options;
 38             Bitmap map = writer.Write(text);
 39             return map;
 40         }
 41 
 42         /// <summary>
 43         /// 生成一维条形码
 44         /// </summary>
 45         /// <param name="text">内容</param>
 46         /// <param name="width">宽度</param>
 47         /// <param name="height">高度</param>
 48         /// <returns></returns>
 49         public static Bitmap Generate2(string text, int width, int height)
 50         {
 51             BarcodeWriter writer = new BarcodeWriter();
 52             //使用ITF 格式，不能被现在常用的支付宝、微信扫出来
 53             //如果想生成可识别的可以使用 CODE_128 格式
 54             //writer.Format = BarcodeFormat.ITF;
 55             writer.Format = BarcodeFormat.CODE_39;
 56             EncodingOptions options = new EncodingOptions()
 57             {
 58                 Width = width,
 59                 Height = height,
 60                 Margin = 2
 61             };
 62             writer.Options = options;
 63             Bitmap map = writer.Write(text);
 64             return map;
 65         }
 66 
 67         /// <summary>
 68         /// 生成带Logo的二维码
 69         /// </summary>
 70         /// <param name="text">内容</param>
 71         /// <param name="width">宽度</param>
 72         /// <param name="height">高度</param>
 73         public static Bitmap Generate3(string text, int width, int height)
 74         {
 75             //Logo 图片
 76             string logoPath = System.AppDomain.CurrentDomain.BaseDirectory + @"\img\logo.png";
 77             Bitmap logo = new Bitmap(logoPath);
 78             //构造二维码写码器
 79             MultiFormatWriter writer = new MultiFormatWriter();
 80             Dictionary<EncodeHintType, object> hint = new Dictionary<EncodeHintType, object>();
 81             hint.Add(EncodeHintType.CHARACTER_SET, "UTF-8");
 82             hint.Add(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
 83             //hint.Add(EncodeHintType.MARGIN, 2);//旧版本不起作用，需要手动去除白边
 84 
 85             //生成二维码 
 86             BitMatrix bm = writer.encode(text, BarcodeFormat.QR_CODE, width + 30, height + 30, hint);
 87             bm = deleteWhite(bm);
 88             BarcodeWriter barcodeWriter = new BarcodeWriter();
 89             Bitmap map = barcodeWriter.Write(bm);
 90 
 91             //获取二维码实际尺寸（去掉二维码两边空白后的实际尺寸）
 92             int[] rectangle = bm.getEnclosingRectangle();
 93 
 94             //计算插入图片的大小和位置
 95             int middleW = Math.Min((int)(rectangle[2] / 3), logo.Width);
 96             int middleH = Math.Min((int)(rectangle[3] / 3), logo.Height);
 97             int middleL = (map.Width - middleW) / 2;
 98             int middleT = (map.Height - middleH) / 2;
 99 
100             Bitmap bmpimg = new Bitmap(map.Width, map.Height, PixelFormat.Format32bppArgb);
101             using (Graphics g = Graphics.FromImage(bmpimg))
102             {
103                 g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
104                 g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
105                 g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
106                 g.DrawImage(map, 0, 0, width, height);
107                 //白底将二维码插入图片
108                 g.FillRectangle(Brushes.White, middleL, middleT, middleW, middleH);
109                 g.DrawImage(logo, middleL, middleT, middleW, middleH);
110             }
111             return bmpimg;
112         }
113 
114         /// <summary>
115         /// 删除默认对应的空白
116         /// </summary>
117         /// <param name="matrix"></param>
118         /// <returns></returns>
119         private static BitMatrix deleteWhite(BitMatrix matrix)
120         {
121             int[] rec = matrix.getEnclosingRectangle();
122             int resWidth = rec[2] + 1;
123             int resHeight = rec[3] + 1;
124 
125             BitMatrix resMatrix = new BitMatrix(resWidth, resHeight);
126             resMatrix.clear();
127             for (int i = 0; i < resWidth; i++)
128             {
129                 for (int j = 0; j < resHeight; j++)
130                 {
131                     if (matrix[i + rec[0], j + rec[1]])
132                         resMatrix[i, j] = true;
133                 }
134             }
135             return resMatrix;
136         }
137     }
138 }

效果图：

转载
作者：Alan.hsiang
出处：http://www.cnblogs.com/hsiang/