//构造二维码写码器MultiFormatWriter mutiWriter = new com.google.zxing.MultiFormatWriter();Hashtable hint=new Hashtable();hint.Add(EncodeHintType.CHARACTER_SET,"UTF-8");hint.Add(EncodeHintType.ERROR_CORRECTION,com.google.zxing.qrcode.decoder.ErrorCorrectionLevel.H);//生成二维码ByteMatrix bm = mutiWriter.encode(txtMsg.Text, com.google.zxing.BarcodeFormat.QR_CODE, 300, 300,hint);Bitmap img = bm.ToBitmap();//要插入到二维码中的图片Image middlImg = QRMiddleImg.Image; //获取二维码实际尺寸（去掉二维码两边空白后的实际尺寸）System.Drawing.Size realSize = mutiWriter.GetEncodeSize(txtMsg.Text, com.google.zxing.BarcodeFormat.QR_CODE, 300, 300);//计算插入图片的大小和位置int middleImgW = Math.Min((int)(realSize.Width / 3.5), middlImg.Width);int middleImgH = Math.Min((int)(realSize.Height / 3.5),middlImg.Height);int middleImgL = (img.Width - middleImgW) / 2;int middleImgT = (img.Height - middleImgH) / 2;//将img转换成bmp格式，否则后面无法创建 Graphics对象Bitmap bmpimg = new Bitmap(img.Width, img.Height,System.Drawing.Imaging.PixelFormat.Format32bppArgb);using (Graphics g = Graphics.FromImage(bmpimg)){g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;g.DrawImage(img, 0, 0);}//在二维码中插入图片System.Drawing.Graphics MyGraphic = System.Drawing.Graphics.FromImage(bmpimg);//白底
                MyGraphic.FillRectangle(Brushes.White,middleImgL, middleImgT, middleImgW, middleImgH);MyGraphic.DrawImage(middlImg, middleImgL, middleImgT, middleImgW, middleImgH);pictureBox1.Image = bmpimg;//自动保存图片到当前目录string filename = System.Environment.CurrentDirectory + "\\QR" + DateTime.Now.Ticks.ToString() + ".jpg";bmpimg.Save(filename, System.Drawing.Imaging.ImageFormat.Jpeg);lbshow.Text = "图片已保存到：" + filename;

           //构建解码器MultiFormatReader mutiReader = new com.google.zxing.MultiFormatReader();Bitmap img = (Bitmap)Bitmap.FromFile(opFilePath);if (img == null)return;LuminanceSource ls = new RGBLuminanceSource(img, img.Width, img.Height);BinaryBitmap bb = new BinaryBitmap(new com.google.zxing.common.HybridBinarizer(ls));//注意  必须是Utf-8编码Hashtable hints = new Hashtable();hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");Result r = mutiReader.decode(bb, hints);txtmsg2.Text = r.Text;lbshow.Text = "解码成功！";