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();
　　}