<%@ WebHandler Language="C#" Class="GetQRCode" %>    using System;  using System.Web;    using ThoughtWorks.QRCode.Codec;  using ThoughtWorks.QRCode.Codec.Data;  using ThoughtWorks.QRCode.Codec.Util;  using System.IO;  using System.Text;  using System.Drawing;  using System.Drawing.Drawing2D;    public class GetQRCode : IHttpHandler  {        public void ProcessRequest(HttpContext context)      {            String data = http://www.mamicode.com/context.Request["CodeText"];          if (!string.IsNullOrEmpty(data))          {              QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();              qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;              qrCodeEncoder.QRCodeScale = 4;              qrCodeEncoder.QRCodeVersion = 8;              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);                System.IO.MemoryStream MStream1 = new System.IO.MemoryStream();              CombinImage(image, context.Server.MapPath("~/images/201292891051540.jpg")).Save(MStream1, System.Drawing.Imaging.ImageFormat.Png);              context.Response.ClearContent();              context.Response.ContentType = "image/png";              context.Response.BinaryWrite(MStream1.ToArray());                //image.Dispose();              MStream.Dispose();              MStream1.Dispose();          }            context.Response.Flush();          context.Response.End();      }        /// <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>        public static Image CombinImage(Image imgBack, string destImg)      {          Image img = Image.FromFile(destImg);        //照片图片              if (img.Height != 65 || img.Width != 65)          {              img = KiResizeImage(img, 65, 65, 0);          }          Graphics g = Graphics.FromImage(imgBack);            g.DrawImage(imgBack, 0, 0, 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 / 2 - img.Width / 2, imgBack.Width / 2 - img.Width / 2, 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(0, 0, newW, newH), new Rectangle(0, 0, bmp.Width, bmp.Height), GraphicsUnit.Pixel);              g.Dispose();              return b;          }          catch          {              return null;          }      }        public bool IsReusable      {          get          {              return false;          }      }  }