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条码生成是一个经常需要处理的功能,本文介绍一个条码处理类库,ZXing用Java实现的多种格式的一维二维条码图像处理库,而ZXing.Net是其.Net版本的实现。
在WinForm下使用该类库需要从NuGet安装两个组件:
ZXing.Net
ZXing.Net.Bindings.Windows.Compatibility
- using ZXing;
- using ZXing.Common;
- using ZXing.OneD;
- using ZXing.QrCode;
- using ZXing.Windows.Compatibility;
-
- namespace QrCodeGen
- {
- public partial class Form1 : Form
- {
- public Form1()
- {
- InitializeComponent();
- }
-
- private void button1_Click(object sender, EventArgs e)
- {
- var writer = new BarcodeWriter<Bitmap>();
- writer.Format = BarcodeFormat.QR_CODE;
- QrCodeEncodingOptions options = new QrCodeEncodingOptions()
- {
- DisableECI = true, //设置内容编码
- CharacterSet = "UTF-8", //设置二维码的宽度和高度
- Width = 200,
- Height = 200,
- Margin = 1 //设置二维码的边距,单位不是固定像素
- };
- var render = new AlternateBitmapRenderer();
- writer.Renderer = render;
-
- writer.Options = options;
- Bitmap map = writer.Write("Hello world");
- pictureBox1.Image = map;
- }
-
- private void button2_Click(object sender, EventArgs e)
- {
- var w = new EAN13Writer();
- var render = new AlternateBitmapRenderer();
- render.TextFont = new Font("Segoe UI", 25);
- var content = "1234567890123";
- // EAN-13 商品条码的标准尺寸是 37.29mm x 26.26 mm ,按照 300 DPI 换算像素大小是 440 x 310
- var m = w.encode(content, BarcodeFormat.EAN_13, 440, 310);
- //渲染得到的图片
- var bmp = render.Render(m, BarcodeFormat.EAN_13, content, new EncodingOptions { Width = 440, Height = 310 });
- pictureBox2.Image = bmp;
- }
- }
- }
EAN-13商品条码是表示EAN/UCC-13商品标识代码的条码符号,由左侧空白区、起始符、左侧数据符、中间分隔符、右侧数据符、校验符、终止符、右侧空白区及供人识别字符组成。
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