生成二维码

//生成二维码
        private static Bitmap CreateQrCode(string printString)
        {
            EncodingOptions options = null;
            BarcodeWriter writer = null;

            options = new QrCodeEncodingOptions
            {
                DisableECI = true,
                CharacterSet = "UTF-8",
                Width = 250,
                Height =250
            };
            writer = new BarcodeWriter();
            writer.Format = BarcodeFormat.QR_CODE;
            writer.Options = options;

            Bitmap bitmap = writer.Write("0123456789");
            return bitmap;

        }
        /// <summary>
        /// 输出二维码
        /// </summary>
        /// <param name="exp">订单信息</param>
        /// <param name="picWidth">宽度</param>
        /// <param name="picHeight">高度</param>
        /// <param name="printString">二维码内容</param>
        /// <returns></returns>
        public static byte[] GetPrintPicture(Model.Pet_OrderO2O exp, int picWidth, int picHeight,string printString)
        {
            Bitmap image = CreateQrCode(printString);
            Bitmap printPicture = new Bitmap(picWidth, picHeight);
            
            Font font = new Font("黑体", 11f);
            Graphics g = Graphics.FromImage(printPicture);
            g.Clear(Color.White);
            Brush brush = new SolidBrush(Color.Black);

            g.SmoothingMode = SmoothingMode.HighQuality;

            g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;//如果不填加反锯齿代码效果如图1

            int pointX = 5;
            Rectangle destRect = new Rectangle(190, 0, image.Width, image.Height);
            g.DrawImage(image, destRect, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel);
            int height = 40;
            RectangleF layoutRectangle = new RectangleF(pointX, height, 220f, 85f);
            g.DrawString("收货人　:" + exp.UserName, font, brush, layoutRectangle);

            //height += interval;
            //layoutRectangle = new RectangleF(pointX, height, 230f, 85f);
            //g.DrawString("省市区　:" + exp.Province+exp.City+exp.District, font, brush, layoutRectangle);
            height += 20;
            layoutRectangle = new RectangleF(pointX, height, 220f, 85f);
            g.DrawString("联系电话:" + exp.MobilePhone, font, brush, layoutRectangle);

            height += 20;
            layoutRectangle = new RectangleF(pointX, height, 220f, 85f);
            g.DrawString("收货地址:" + exp.ServiceAddr, font, brush, layoutRectangle);            

            height += 60;
            layoutRectangle = new RectangleF(pointX, height, 220f, 85f);
            g.DrawString("邮　　编:" + exp.Postcode, font, brush, layoutRectangle);

            height += 20;
            layoutRectangle = new RectangleF(pointX, height, 220f, 85f);
            g.DrawString("备　　注:" + exp.Remark, font, brush, layoutRectangle);
            MemoryStream stream = new MemoryStream();
            printPicture.Save(stream, ImageFormat.Jpeg);
            return stream.ToArray();
        }