生成带内嵌图片的二维码

        private string QcodeSource
        {
            get
            {
                return "http://www.baidu.com";
            }
        }

        public static byte[] GetQrCodeBitmapImage(string qrcode)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(qrcode)) return null;

                // Get QrCode GraphicsRenderer
                var qrEncoder = new QrEncoder(ErrorCorrectionLevel.H);
                var qrCode = qrEncoder.Encode(qrcode);
                var renderer = new GraphicsRenderer(new FixedModuleSize(24, QuietZoneModules.Four), Brushes.Black, Brushes.White);

                using (var stream = new MemoryStream())
                {
                    renderer.WriteToStream(qrCode.Matrix, ImageFormat.Jpeg, stream);
                    stream.Seek(0, SeekOrigin.Begin);
                    stream.Flush();
                    return stream.ToArray();
                }
            }
            catch (Exception)
            {
                return null;
            }

        }

        /// 
  
        /// 调用此函数后使此两种图片合并，类似相册，有个  
        /// 背景图，中间贴自己的目标图片  
        ///   
        /// 粘贴的源图片  
        /// 粘贴的目标图片  
        public static Bitmap CombinImage(Bitmap sourceImage, Bitmap destBitmap)
        {
            if (destBitmap.Height != 250 || destBitmap.Width != 250)
            {
                destBitmap = KiResizeImage(destBitmap, 250, 250, 0);
            }

            using (var g = Graphics.FromImage(sourceImage))
            {
                //g.DrawImage(img, 照片与相框的左边距, 照片与相框的上边距, 照片宽, 照片高); 
                g.DrawImage(sourceImage, 0, 0, sourceImage.Width, sourceImage.Height);

                //g.FillRectangle(System.Drawing.Brushes.White, imgBack.Width / 2 - img.Width / 2 - 1, imgBack.Width / 2 - img.Width / 2 - 1,1,1);//相片四周刷一层黑色边框  
                g.DrawImage(destBitmap, sourceImage.Width / 2 - destBitmap.Width / 2, sourceImage.Width / 2 - destBitmap.Width / 2, destBitmap.Width, destBitmap.Height);
                GC.Collect();
                return sourceImage;

            }
        }