/// <summary>

        /// 条码识别

        /// </summary>

        private void ScanBarCode(string fileName)

        {

            DateTime now = DateTime.Now;

            Image primaryImage = Image.FromFile(fileName);

            Bitmap pImg = MakeGrayscale3((Bitmap)primaryImage);

            using (ZBar.ImageScanner scanner = new ZBar.ImageScanner())

            {

                scanner.SetConfiguration(ZBar.SymbolType.None, ZBar.Config.Enable, 0);

                scanner.SetConfiguration(ZBar.SymbolType.CODE39, ZBar.Config.Enable, 1);

                scanner.SetConfiguration(ZBar.SymbolType.CODE128, ZBar.Config.Enable, 1);

                List<ZBar.Symbol> symbols = new List<ZBar.Symbol>();

                symbols = scanner.Scan((Image)pImg);

                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.Quality + Environment.NewLine);

                    MessageBox.Show(result);

                }

            }

        }

        /// <summary>

        /// 处理图片灰度

        /// </summary>

        /// <param name="original"></param>

        /// <returns></returns>

        public 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;

        }