C# 生成二维码和zxing类库

在C#中直接引用ThoughtWorks.QRCode.dll 类，       ThoughtWorks.QRCode.Codec.QRCodeEncoder encoder = new QRCodeEncoder();        encoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.ALPHA_NUMERIC;//编码方法        encoder.QRCodeScale = 4;//大小         encoder.QRCodeVersion = 4;//版本         encoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;  String qrdata = "二维码信息";System.Drawing.Bitmap bp = encoder.Encode(qrdata.ToString(), Encoding.GetEncoding("GB2312"));            Image image = bp;            Object oMissing = System.Reflection.Missing.Value;            pictureBox1.Image = bp;保存二维码图片：SaveFileDialog sf = new SaveFileDialog();            sf.Title = "选择保存文件位置";            sf.Filter = "保存图片(*.jpg) |*.jpg|所有文件(*.*) |*.*";            //设置默认文件类型显示顺序            sf.FilterIndex = 1;            //保存对话框是否记忆上次打开的目录            sf.RestoreDirectory = true;            if (sf.ShowDialog() == DialogResult.OK)            {                Image im = this.pictureBox1.Image;                //获得文件路径                localFilePath = sf.FileName.ToString();                if (sf.FileName != "")                {                    fileNameExt = localFilePath.Substring(localFilePath.LastIndexOf("\\") + 1);//获取文件名，不带路径                   // newFileName = fileNameExt+DateTime.Now.ToString("yyyyMMdd")  ;//给文件名后加上时间                    FilePath = localFilePath.Substring(0, localFilePath.LastIndexOf("."));  //获取文件路径，带文件名,不带后缀                    string fn = sf.FileName;                    pictureBox1.Image.Save(FilePath +"-"+ DateTime.Now.ToString("yyyyMMdd") + ".jpg");                                   }} //解析二维码信息  // QRCodeDecoder decoder = new QRCodeDecoder();  //  String decodedString = decoder.decode(new QRCodeBitmapImage(new Bitmap(pictureBox1.Image)));   //this.label3.Text = decodedString; 2、另一种方法，引用ZXing类库。  ZXing是一个开源Java类库用于解析多种格式的1D/2D条形码。目标是能够对QR编码、Data Matrix、UPC的1D条形码进行解码。于此同时，它同样提供 cpp，ActionScript，android，iPhone，rim，j2me，j2se，jruby，C#等方式的类库。zxing类库的作用主 要是解码，是目前开源类库中解码能力比较强的（商业的另说，不过对于动辄成千上万的类库授权费用，的确很值）。到谷歌code下载相应的代码1.下载zxing最新的包到zxing的主页： http://code.google.com/p/zxing/找到其中的CSharp文件夹，在vs中打开并编译，将obj下debug中的zxing.dll复制并粘帖到你的项目中的bin文件目录下，右击添加项目引用。将zxing.dll引用到项目中，就可以在需要的地方使用了。源代码中有两处UTF-8的问题，会导致中文出现乱码（编译.dll之前修改）其一：com.google.zxing.qrcode.encoder.encoder类中的internal const System.String DEFAULT_BYTE_MODE_ENCODING = "ISO-8859-1";此处，将ISO-8859-1改为UTF-8其二：com.google.zxing.qrcode.decoder.DecodedBitStreamParser类的成员private const System.String UTF8 = "UTF8";应将UTF8改为UTF-8生成代码：//引用 using com.google.zxing.qrcode; using com.google.zxing; using com.google.zxing.common; using ByteMatrix = com.google.zxing.common.ByteMatrix; using EAN13Writer = com.google.zxing.oned.EAN13Writer; using EAN8Writer = com.google.zxing.oned.EAN8Writer; using MultiFormatWriter = com.google.zxing.MultiFormatWriter;        方法：        string content = "二维码信息";        ByteMatrix byteMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, 300, 300);        Bitmap bitmap = toBitmap(byteMatrix);        pictureBox1.Image = bitmap;        SaveFileDialog sFD = new SaveFileDialog();        sFD.Filter = "保存图片(*.png) |*.png|所有文件(*.*) |*.*";        sFD.DefaultExt = "*.png|*.png";        sFD.AddExtension = true;        if (sFD.ShowDialog() == DialogResult.OK)        {            if (sFD.FileName != "")            {                writeToFile(byteMatrix, System.Drawing.Imaging.ImageFormat.Png, sFD.FileName);            }        }解析：    if (this.openFileDialog1.ShowDialog() != DialogResult.OK)        {            return;        }        Image img = Image.FromFile(this.openFileDialog1.FileName);        Bitmap bmap;        try        {            bmap = new Bitmap(img);        }        catch (System.IO.IOException ioe)        {            MessageBox.Show(ioe.ToString());            return;        }        if (bmap == null)        {            MessageBox.Show("Could not decode image");            return;        }        LuminanceSource source = new RGBLuminanceSource(bmap, bmap.Width, bmap.Height);        com.google.zxing.BinaryBitmap bitmap1 = new com.google.zxing.BinaryBitmap(new HybridBinarizer(source));        Result result;        try        {            result = new MultiFormatReader().decode(bitmap1);        }        catch (ReaderException re)        {            MessageBox.Show(re.ToString());            return;        }        MessageBox.Show(result.Text);  public static void writeToFile(ByteMatrix matrix, System.Drawing.Imaging.ImageFormat format, string file)    {        Bitmap bmap = toBitmap(matrix);        bmap.Save(file, format);    }    public static Bitmap toBitmap(ByteMatrix matrix)    {        int width = matrix.Width;        int height = matrix.Height;        Bitmap bmap = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);        for (int x = 0; x < width; x++)        {            for (int y = 0; y < height; y++)            {                bmap.SetPixel(x, y, matrix.get_Renamed(x, y) != -1 ? ColorTranslator.FromHtml("0xFF000000") : ColorTranslator.FromHtml("0xFFFFFFFF"));            }        }        return bmap;    }

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