//二维码要存储的内容
            string codeString = "测试";
            //生成二维码并返回Bitmap
            Bitmap bitmap= ZxingHelper.CreateQRCode(codeString);
            //保存图片到本地
            //bitmap.Save(@"C:\Users\Administrator\Desktop\a.png");
            //将Bitmap转换成Image对象
            Image img = Image.FromHbitmap(bitmap.GetHbitmap());
            //设置pictureBox的图片源
            this.pictureBox1.Image = img;