//图片路径

    string imgPath = @"D:\barcode.png";

    //解码通用类

    IBarcodeReader reader = new BarcodeReader();

    Bitmap bmp = new Bitmap(imgPath);

    Result result = reader.Decode(bmp);

    bmp.Dispose();

    if (result != null)

    {

        string text = result.Text; //条码内容

        string foramt = result.BarcodeFormat.ToString(); //条码类型

    }