QR code generation and analysis

        #region  QR code 
        int i = 2;
        /// <summary>
        ///  Generate qr code 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnProduct_Click(object sender, EventArgs e)
        {
            ThoughtWorks.QRCode.Codec.QRCodeEncoder endocder = new ThoughtWorks.QRCode.Codec.QRCodeEncoder();
            // QR code background color 
            endocder.QRCodeBackgroundColor = System.Drawing.Color.White;
            // QR code encoding method 
            endocder.QRCodeEncodeMode = ThoughtWorks.QRCode.Codec.QRCodeEncoder.ENCODE_MODE.BYTE;
            // The width of each small square 
            endocder.QRCodeScale = 4;
            // QR code version number 
            endocder.QRCodeVersion = 5;// Control version , Different versions , The displayed styles are different 
            // Error correction level 
            endocder.QRCodeErrorCorrect = ThoughtWorks.QRCode.Codec.QRCodeEncoder.ERROR_CORRECTION.M;
            var person = new { Id = ++i, Name = "wolfy", Gender = 1, Age = 24 + ++i };
            // take json Chuancheng QR code 
            using (Bitmap bitmap = endocder.Encode(new JavaScriptSerializer().Serialize(person), System.Text.Encoding.UTF8))
            {
                //Bitmap bitmap = endocder.Encode(new JavaScriptSerializer().Serialize(person), System.Text.Encoding.UTF8);
                var strSavePath = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, $"QRCode{i}.jpg");
                strSavePath = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, $"QRCode.jpg");
                if (!Directory.Exists(Path.GetDirectoryName(strSavePath)))
                {
                    Directory.CreateDirectory(strSavePath);
                }
                //System.Runtime.InteropServices.ExternalException:
                //      Save the image in the wrong image format . -  or  -  The image has been saved to the same file from creating it . Generally, the problem is to save the passage , perhaps aspnet Read and write file permissions 
                bitmap.Save(strSavePath, System.Drawing.Imaging.ImageFormat.Jpeg);
                pbxPicture.SizeMode = PictureBoxSizeMode.Zoom;
                //pbxQRCode.Image = Bitmap.FromHbitmap(bitmap.GetHbitmap());
                // The first drawing 
                IntPtr hBitmap = bitmap.GetHbitmap();
                pbxQRCode.Image = Bitmap.FromHbitmap(hBitmap);
                //pbxQRCode.Image.Save(System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, $"QRCode.jpg"), System.Drawing.Imaging.ImageFormat.Jpeg);
                DeleteObject(hBitmap);
                bitmap.Dispose();

                // The second drawing 
                //Graphics graphics = Graphics.FromImage(bitmap);
                //graphics.Clear(Color.White);
                 Again bitmap Draw on 
                //graphics.DrawImage(new Bitmap(""), new PointF(0, 0));
                //graphics.Dispose();
            }


            // Decrypt QR code 
            //ThoughtWorks.QRCode.Codec.QRCodeDecoder qRCodeDecoder = new ThoughtWorks.QRCode.Codec.QRCodeDecoder();
            //var decoderResult = qRCodeDecoder.decode(new ThoughtWorks.QRCode.Codec.Data.QRCodeBitmapImage(new Bitmap(strSavePath)));

        }

        /// <summary>
        ///  Decrypt QR code 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnConsume_Click(object sender, EventArgs e)
        {
            var strSavePath = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, $"QRCode{i}.jpg");
            strSavePath = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, $"QRCode.jpg");
            ThoughtWorks.QRCode.Codec.QRCodeDecoder qRCodeDecoder = new ThoughtWorks.QRCode.Codec.QRCodeDecoder();
            var decoderResult = qRCodeDecoder.decode(new ThoughtWorks.QRCode.Codec.Data.QRCodeBitmapImage(new Bitmap(strSavePath)));
            lblTakephotoSavePath.Text = $" QR code ：{decoderResult}";
        }
        #endregion