C#使用zxing/zbar/thoughtworkQRcode解析二维码的示例代码

Image primaryImage = Image.FromFile(fileName);
Bitmap pImg = MakeGrayscale3((Bitmap)primaryImage);
using (ZBar.ImageScanner scanner = new ZBar.ImageScanner())
{
    List<ZBar.Symbol> symbols = new List<ZBar.Symbol>();
    System.Diagnostics.Stopwatch watch = new Stopwatch();
    watch.Start();
    symbols = scanner.Scan((Image)pImg);
    watch.Stop();
    TimeSpan timeSpan = watch.Elapsed;
    MessageBox.Show("扫描执行时间：" + timeSpan.TotalMilliseconds.ToString());
    if (symbols != null && symbols.Count > 0)
    {
        string result = string.Empty;
        symbols.ForEach(s => result += "条码内容:" + s.Data + " 条码质量:" + s.Type + Environment.NewLine);
        MessageBox.Show(result);
    }
}

Image primaryImage = Image.FromFile(fileName);
Bitmap pImg = MakeGrayscale3((Bitmap)primaryImage);
BarcodeReader reader = new BarcodeReader();
System.Diagnostics.Stopwatch watch = new Stopwatch();
watch.Start();
Result result = reader.Decode((Bitmap)pImg); //通过reader解码
watch.Stop();
TimeSpan timeSpan = watch.Elapsed;
MessageBox.Show("二维码值："+result+"扫描执行时间：" + timeSpan.TotalMilliseconds.ToString());

Image primaryImage = Image.FromFile(fileName);
Bitmap pImg = (Bitmap)primaryImage;// MakeGrayscale3((Bitmap)primaryImage);
try
{
    System.Diagnostics.Stopwatch watch = new Stopwatch();
    watch.Start();
    string decodedString = new QRCodeDecoder().decode(new QRCodeBitmapImage(pImg), Encoding.UTF8);
    watch.Stop();
    TimeSpan timeSpan = watch.Elapsed;
    MessageBox.Show("二维码值：" + decodedString + "扫描执行时间：" + timeSpan.TotalMilliseconds.ToString());
}
catch (Exception ex)
{
    MessageBox.Show("好难过");
}