用Barcode生成条形码图片

使用第三方类库：BarcodeLib.dll

private BitmapImage GenerateBarcodeBitmap(string visitId)
        {
            BarcodeLib.Barcode barcode = new BarcodeLib.Barcode();
            barcode.Alignment = BarcodeLib.AlignmentPositions.CENTER;
            barcode.IncludeLabel = true;
            barcode.LabelPosition = BarcodeLib.LabelPositions.BOTTOMCENTER;
            //b.RotateFlipType = RotateFlipType.;

            BarcodeLib.TYPE type = BarcodeLib.TYPE.CODE128;
            System.Drawing.Image image = barcode.Encode(type, visitId, Color.Black, Color.White, 200, 60);

            MemoryStream ms = new MemoryStream();
            Bitmap bmp = new Bitmap(image);
            bmp.Save(ms, ImageFormat.Bmp);
            byte[] imgByte = new byte[ms.Length];
            ms.Position = 0;
            ms.Read(imgByte, 0, Convert.ToInt32(ms.Length));

            System.Windows.Media.Imaging.BitmapImage bitmapImage = new System.Windows.Media.Imaging.BitmapImage();
            bitmapImage.BeginInit();
            bitmapImage.StreamSource = new MemoryStream(imgByte);
            bitmapImage.EndInit();

            return bitmapImage;
        }