/// <summary>
/// 條碼識(shí)別
/// </summary>
static List<ZBar.Symbol> ScanBarCode(string filename)
{
    var bitmap = (Bitmap)Image.FromFile(filename);
    bitmap = MakeGrayscale3(bitmap);
    List<ZBar.Symbol> result = new List<ZBar.Symbol>();
    using (var scanner = new ZBar.ImageScanner())
    {
        var symbols = scanner.Scan(bitmap);
        if (symbols != null && symbols.Count > 0)
        {
            result.AddRange(symbols);
        }
    }
    return result;
}
/// <summary>
/// 處理圖片灰度
/// </summary>
static Bitmap MakeGrayscale3(Bitmap original)
{
    //create a blank bitmap the same size as original
    Bitmap newBitmap = new Bitmap(original.Width, original.Height);
    //get a graphics object from the new image
    Graphics g = Graphics.FromImage(newBitmap);
    //create the grayscale ColorMatrix
    System.Drawing.Imaging.ColorMatrix colorMatrix = new System.Drawing.Imaging.ColorMatrix(
        new float[][]
        {
            new float[] {.3f, .3f, .3f, 0, 0},
            new float[] {.59f, .59f, .59f, 0, 0},
            new float[] {.11f, .11f, .11f, 0, 0},
            new float[] {0, 0, 0, 1, 0},
            new float[] {0, 0, 0, 0, 1}
      });
    //create some image attributes
    ImageAttributes attributes = new ImageAttributes();
    //set the color matrix attribute
    attributes.SetColorMatrix(colorMatrix);
    //draw the original image on the new image
    //using the grayscale color matrix
    g.DrawImage(original, new Rectangle(0, 0, original.Width, original.Height),
       0, 0, original.Width, original.Height, GraphicsUnit.Pixel, attributes);
    //dispose the Graphics object
    g.Dispose();
    return newBitmap;
}

Console.WriteLine(ZBar.ZBar.Version);
var symbols = ScanBarCode("426301-20160127111209879-611759974.jpg");
string result = string.Empty;
symbols.ForEach(s => Console.WriteLine($"條碼類型:{s.Type} 條碼內(nèi)容:{s.Data} 條碼質(zhì)量:{s.Quality}"));
Console.ReadKey();