详细链接：https://shop499704308.taobao.com/?spm=a1z38n.10677092.card.11.594c1debsAGeak
using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Drawing;

using System.IO;

using System.Drawing.Imaging;

using ThoughtWorks.QRCode.Codec;

using System.Drawing.Drawing2D;

namespace MvcGuestBook.Common

{

    public class QrCodeNet

    {

        /// <summary>

        /// 生成二维码图片(中间无图片)详细源码链接:http://download.csdn.net/download/u012949335/10209428

        /// </summary>

        /// <param name="data">二维码里面的内容</param>

        public static string GetQrCodeDe(string data)

        {

            QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();

            qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;

            qrCodeEncoder.QRCodeScale = ;

            qrCodeEncoder.QRCodeVersion = ;

            qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;

            System.Drawing.Image image = qrCodeEncoder.Encode(data);

            string WebPath = "FlexPaper/QRCodeFile/" + DateTime.Now.ToString("yyyy-MM-dd");

            string DiskPath = HttpContext.Current.Server.MapPath(WebPath);

            if (!Directory.Exists(DiskPath))

            {

                Directory.CreateDirectory(DiskPath);

            }

            string FileName = DateTime.Now.ToString("HHmmss") + ".jpg";

            string FilePath = DiskPath + "/" + FileName;

            image.Save(FilePath);//写入图片文件中

            //HttpContext.Current.Response.Write(WebPath + "/" + FileName);

            //HttpContext.Current.Response.ContentType = "image/png";

            return WebPath + "/" + FileName;

        }

        /// <summary>

        /// 生成二维码图片

        /// </summary>

        /// <param name="data">二维码里面的内容</param>

        public static void GetQrCode(string data)

        {

            QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();

            qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;

            qrCodeEncoder.QRCodeScale = ;

            qrCodeEncoder.QRCodeVersion = ;

            qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;

            System.Drawing.Image image = qrCodeEncoder.Encode(data);

            //System.IO.MemoryStream MStream = new System.IO.MemoryStream();

            //image.Save(MStream, System.Drawing.Imaging.ImageFormat.Png);

            //MStream.Dispose();

            string WebPath = "FlexPaper/QRCodeFile/" + DateTime.Now.ToString("yyyy-MM-dd");

            string DiskPath = HttpContext.Current.Server.MapPath(WebPath);

            if (!Directory.Exists(DiskPath))

            {

                Directory.CreateDirectory(DiskPath);

            }

            string FileName = DateTime.Now.ToString("HHmmss") + ".jpg";

            string FilePath = DiskPath + "/" + FileName;

            Image QRImage = CombinImage(image, HttpContext.Current.Server.MapPath("~/Images/1.png"));//添加二维码中间的Log图片

            //System.IO.MemoryStream MStream1 = new System.IO.MemoryStream();

            //QRImage.Save(MStream1, System.Drawing.Imaging.ImageFormat.Png);//写入缓存显示在页面

            //context.Response.BinaryWrite(MStream1.ToArray());

            //MStream1.Dispose();

            QRImage.Save(FilePath);//写入图片文件中

            HttpContext.Current.Response.Write(WebPath + "/" + FileName);

            //context.Response.ClearContent();

            HttpContext.Current.Response.ContentType = "image/png";

        }

        /// <summary>

        /// 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

        /// </summary>

        /// <param name="imgBack">粘贴的源图片</param>

        /// <param name="destImg">粘贴的目标图片</param>

        /// <returns>图片</returns>

        public static Image CombinImage(Image imgBack, string destImg)

        {

            Image img = Image.FromFile(destImg); //照片图片

            if (img.Height !=  || img.Width != )

            {

                img = KiResizeImage(img, , , );

            }

            Graphics g = Graphics.FromImage(imgBack);

            g.DrawImage(imgBack, , , imgBack.Width, imgBack.Height);

            //g.DrawImage(imgBack, 0, 0, 相框宽, 相框高);

            //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(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(img, imgBack.Width /  - img.Width / , imgBack.Width /  - img.Width / , img.Width, img.Height);

            GC.Collect();

            return imgBack;

        }

        /// <summary>

        /// Resize图片

        /// </summary>

        /// <param name="bmp">原始Bitmap </param>

        /// <param name="newW">新的宽度</param>

        /// <param name="newH">新的高度</param>

        /// <param name="Mode">保留着，暂时未用</param>

        /// <returns>处理以后的图片</returns>

        public static Image KiResizeImage(Image bmp, int newW, int newH, int Mode)

        {

            try

            {

                Image b = new Bitmap(newW, newH);

                Graphics g = Graphics.FromImage(b);

                // 插值算法的质量

                g.InterpolationMode = InterpolationMode.HighQualityBicubic;

                g.DrawImage(bmp, new Rectangle(, , newW, newH), new Rectangle(, , bmp.Width, bmp.Height), GraphicsUnit.Pixel);

                g.Dispose();

                return b;

            }

            catch

            {

                return null;

            }

        }

        public bool IsReusable

        {

            get

            {

                return false;

            }

        }

    }

}