Zxing.net是一个开放的源码,是基于的C#条码处理库,支持一维码、二维码生成与识别。开源地址:https://github.com/micjahn/ZXing.Net
使用教程
生成条码
class Program
{
static void Main(string[] args)
{
GenerateBarCode("123456789",500,80);
Console.ReadKey();
}
/// <summary>
/// 生成一维条形码
/// </summary>
/// <param name="text">内容</param>
/// <param name="width">宽度</param>
/// <param name="height">高度</param>
/// <returns></returns>
public static Bitmap GenerateBarCode(string text, int width, int height)
{
BarcodeWriter writer = new BarcodeWriter();
//条码类型
writer.Format = BarcodeFormat.CODE_39;
EncodingOptions options = new EncodingOptions()
{
Width = width,
Height = height,
Margin = 2
};
writer.Options = options;
Bitmap map = writer.Write(text);
map.Save("1.bmp");
return map;
}
}
生成二维码
class Program
{
static void Main(string[] args)
{
GenerateQrCode("这是一个有码挺好测试程序", 500, 500);
Console.ReadKey();
}
/// <summary>
/// 生成二维码
/// </summary>
/// <param name="text">内容</param>
/// <param name="width">宽度</param>
/// <param name="height">高度</param>
/// <returns></returns>
public static Bitmap GenerateQrCode(string text, int width, int height)
{
BarcodeWriter writer = new BarcodeWriter();
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 = width,
Height = height,
Margin = 1//设置二维码的边距,单位不是固定像素
};
writer.Options = options;
Bitmap map = writer.Write(text);
map.Save("1.bmp");
return map;
}
}
生成带LOGO二维码
class Program
{
static void Main(string[] args)
{
GenerateLogoQrCode("这是一个有码挺好测试程序", 500, 500);
Console.ReadKey();
}
/// <summary>
/// 生成带Logo的二维码
/// </summary>
/// <param name="text">内容</param>
/// <param name="width">宽度</param>
/// <param name="height">高度</param>
public static Bitmap GenerateLogoQrCode(string text, int width, int height)
{
//Logo 图片
string logoPath = System.AppDomain.CurrentDomain.BaseDirectory + @"\logo0.png";
Bitmap logo = new Bitmap(logoPath);
//构造二维码写码器
MultiFormatWriter writer = new MultiFormatWriter();
Dictionary<EncodeHintType, object> hint = new Dictionary<EncodeHintType, object>();
hint.Add(EncodeHintType.CHARACTER_SET, "UTF-8");
hint.Add(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
//生成二维码
BitMatrix bm = writer.encode(text, BarcodeFormat.QR_CODE, width, height, hint);
BarcodeWriter barcodeWriter = new BarcodeWriter();
Bitmap map = barcodeWriter.Write(bm);
//获取二维码实际尺寸,去掉二维码两边空白后的实际尺寸
int[] rectangle = bm.getEnclosingRectangle();
//计算插入图片的大小和位置
int middleW = Math.Min((int)(rectangle[2] / 3), logo.Width);
int middleH = Math.Min((int)(rectangle[3] / 3), logo.Height);
int middleL = (map.Width - middleW) / 2;
int middleT = (map.Height - middleH) / 2;
Bitmap bmpimg = new Bitmap(map.Width, map.Height, PixelFormat.Format32bppArgb);
using (Graphics g = Graphics.FromImage(bmpimg))
{
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.DrawImage(map, 0, 0, width, height);
g.FillRectangle(Brushes.White, middleL, middleT, middleW, middleH);
g.DrawImage(logo, middleL, middleT, middleW, middleH);
}
return bmpimg;
}
}
识别二维码
class Program
{
static void Main(string[] args)
{
ReaderCode();
Console.ReadKey();
}
/// <summary>
/// 识别二维码/条码
/// </summary>
/// <param name="filename"></param>
public static void ReaderCode(string fileName="2.png")
{
BarcodeReader reader = new BarcodeReader();
//设置读取的格式(一般为UTF-8)
reader.Options.CharacterSet = "UTF-8";
//加载二维码图片
Bitmap p = new Bitmap("1.bmp");
Result result = reader.Decode(p);
//二维码内容
var text = result.Text;
Console.WriteLine(text);
}
}
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