c# 解析二维码

zxing

安装nuget包【ZXing.Net】

/// <summary>
/// 图片转换
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
LuminanceSource CreateLuminanceSourceFromMyImageType(Image image)
{
    // 转换为Bitmap，以便可以访问像素数据  
    Bitmap bitmap = image as Bitmap ?? new Bitmap(image);

    // 锁定位图的内存区域以获取原始图像数据  
    Rectangle rect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
    BitmapData bitmapData = bitmap.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);

    // 计算需要的字节数组大小（每像素3字节：R, G, B）  
    int bytes = bitmapData.Stride * bitmap.Height;
    byte[] rgbRawBytes = new byte[bytes];

    // 将原始图像数据复制到数组中  
    Marshal.Copy(bitmapData.Scan0, rgbRawBytes, 0, bytes);

    // 解锁位图的内存区域  
    bitmap.UnlockBits(bitmapData);

    // 释放Bitmap资源（如果它不是传入的原始Image）  
    if (bitmap != image)
    {
        bitmap.Dispose();
    }
    return new RGBLuminanceSource(rgbRawBytes, image.Width, image.Height);
}



//调用
var path = "C:\\Users\\ivesBao\\Desktop\\图片1.png";
//var pareResult = RecognizePic("C:\\Users\\ivesBao\\Desktop\\图片1.png");
//var img = new Bitmap();

Func<Image, LuminanceSource> createLuminanceSource = _image => CreateLuminanceSourceFromMyImageType(_image);
var reader = new BarcodeReader<Image>(createLuminanceSource);
var image = Image.FromFile(path);
var result = reader.Decode(image);

ThoughtWorks.QRCode

安装nuget包【ThoughtWorks.QRCodeCore】

var tempPicPath= "C:\\Users\\ivesBao\\Desktop\\图片1.png";

   Image primaryImage = Image.FromFile(tempPicPath);
                        Bitmap pImg = (Bitmap)primaryImage;
                        //二维码识别
                        //questionId=38004b055724020001&roomId=230830102938240208&userId=230830103040240100
                        string decodedString = new QRCodeDecoder().decode(
                            new QRCodeBitmapImage(pImg), Encoding.UTF8);

[参考]
C#二维码生成解析