<%@ Page language="c#" %>     <%@ Import Namespace="System.Drawing" %>     <%@ Import Namespace="System.Drawing.Imaging" %>         <script language="c#" runat="server">     private void Page_Load(object sender, System.EventArgs e)     {     // 设置 mime 类型为image/jpeg，即将向浏览器输出JPGE格式的图像     Response.Clear();     Response.ContentType="image/jpeg";         Bitmap OutputBitmap = new Bitmap(Server.MapPath("source.bmp"));//新建BitMap对象     System.Drawing.Imaging.EncoderParameters encoderParams = new System.Drawing.Imaging.EncoderParameters();     long[] quality = new long[1];     int comp = 0;     if (Request.QueryString["comp"] != "") { comp = Convert.ToInt16(Request.QueryString["comp"]); }     quality[0] = comp; //0 to 100 最高质量为100     System.Drawing.Imaging.EncoderParameter encoderParam = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality);     encoderParams.Param[0] = encoderParam;     ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();//获得包含有关内置图像编码解码器的信息的ImageCodecInfo 对象。     ImageCodecInfo jpegICI = null;     for (int x = 0; x < arrayICI.Length; x++)     {     if (arrayICI[x].FormatDescription.Equals("JPEG"))     {     jpegICI = arrayICI[x];//设置JPEG编码     break;     }     }     if (jpegICI != null)     {     OutputBitmap.Save(Response.OutputStream, jpegICI, encoderParams);//将位图对象以流格式并用JPEG编解码参数保存到输出流。     }     // clean up     OutputBitmap.Dispose();     }     </script>