<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="jqUploadify._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title>无标题页</title>

    <link href="scripts/uploadify.css" rel="stylesheet" type="text/css" />

    <link href="scripts/default.css" rel="stylesheet" type="text/css" />

    <script src="scripts/jquery-1.7.2.min.js" type="text/javascript"></script>

    <script src="scripts/swfobject.js" type="text/javascript"></script>

    <script src="scripts/jquery.uploadify.min.js" type="text/javascript"></script>

    <script type="text/javascript">

    $(function(){

        $("#file_upload").uploadify({

            //开启调试

            'debug' : false,

            //是否自动上传

            'auto':false,

            'buttonText':'选择照片',

            //flash

            'swf': "scripts/uploadify.swf",

            //文件选择后的容器ID

            'queueID':'uploadfileQueue',

            'uploader':'scripts/upload.ashx',

            'width':'',

            'height':'',

            'multi':false,

            'fileTypeDesc':'支持的格式：',

            'fileTypeExts':'*.jpg;*.jpge;*.gif;*.png',

            'fileSizeLimit':'1MB',

            'removeTimeout':,

            //返回一个错误，选择文件的时候触发

            'onSelectError':function(file, errorCode, errorMsg){

                switch(errorCode) {

                    case -:

                        alert("上传的文件数量已经超出系统限制的"+$('#file_upload').uploadify('settings','queueSizeLimit')+"个文件！");

                        break;

                    case -:

                        alert("文件 ["+file.name+"] 大小超出系统限制的"+$('#file_upload').uploadify('settings','fileSizeLimit')+"大小！");

                        break;

                    case -:

                        alert("文件 ["+file.name+"] 大小异常！");

                        break;

                    case -:

                        alert("文件 ["+file.name+"] 类型不正确！");

                        break;

                }

            },

            //检测FLASH失败调用

            'onFallback':function(){

                alert("您未安装FLASH控件，无法上传图片！请安装FLASH控件后再试。");

            },

            //上传到服务器，服务器返回相应信息到data里

            'onUploadSuccess':function(file, data, response){

                //alert(data);

            }

        });

    });

    function doUplaod(){

        $('#file_upload').uploadify('upload','*');

    }

    function closeLoad(){

        $('#file_upload').uploadify('cancel','*');

    }

    </script>

</head>

<body>

    <table width="" border="" align="center" cellpadding="" cellspacing="" id="__01">

        <tr>

            <td align="center" valign="middle">

                <div id="uploadfileQueue" style="padding: 3px;">

                </div>

                <div id="file_upload">

                </div>

            </td>

        </tr>

        <tr>

            <td height="" align="center" valign="middle">

                <img alt="" src="data:images/BeginUpload.gif" width="" height="" onclick="doUplaod()" style="cursor: hand" />

                <img alt="" src="data:images/CancelUpload.gif" width="" height="" onclick="closeLoad()" style="cursor: hand" />

            </td>

        </tr>

    </table>

</body>

</html>
using System;

using System.Collections;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Services;

using System.Web.Services.Protocols;

using System.Xml.Linq;

using System.Web.SessionState;

using System.IO;

namespace jqUploadify.scripts

{

    /// <summary>

    /// $codebehindclassname$ 的摘要说明

    /// </summary>

    [WebService(Namespace = "http://tempuri.org/")]

    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

    public class upload : IHttpHandler, IRequiresSessionState

    {

        public void ProcessRequest(HttpContext context)

        {

            context.Response.ContentType = "text/plain";

            context.Response.Charset = "utf-8";

            HttpPostedFile file = context.Request.Files["Filedata"];

            string uploadPath = context.Server.MapPath("..\\uploads\\");

            if (file != null)

            {

                if (!Directory.Exists(uploadPath))

                {

                    Directory.CreateDirectory(uploadPath);

                }

                file.SaveAs(uploadPath + file.FileName);

                //生成缩略图

                MakeThumbnail(uploadPath + file.FileName, uploadPath + "\\s\\" + file.FileName, , );

            }

        }

        private void MakeThumbnail(string sourcePath, string newPath, int width, int height)

        {

            System.Drawing.Image ig = System.Drawing.Image.FromFile(sourcePath);

            int towidth = width;

            int toheight = height;

            int x = ;

            int y = ;

            int ow = ig.Width;

            int oh = ig.Height;

            if ((double)ig.Width / (double)ig.Height > (double)towidth / (double)toheight)

            {

                oh = ig.Height;

                ow = ig.Height * towidth / toheight;

                y = ;

                x = (ig.Width - ow) / ;

            }

            else

            {

                ow = ig.Width;

                oh = ig.Width * height / towidth;

                x = ;

                y = (ig.Height - oh) / ;

            }

            System.Drawing.Image bitmap = new System.Drawing.Bitmap(towidth, toheight);

            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);

            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;

            g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

            g.Clear(System.Drawing.Color.Transparent);

            g.DrawImage(ig, new System.Drawing.Rectangle(, , towidth, toheight), new System.Drawing.Rectangle(x, y, ow, oh), System.Drawing.GraphicsUnit.Pixel);

            try

            {

                bitmap.Save(newPath, System.Drawing.Imaging.ImageFormat.Jpeg);

            }

            catch (Exception ex)

            {

                throw ex;

            }

            finally

            {

                ig.Dispose();

                bitmap.Dispose();

                g.Dispose();

            }

        }

        public bool IsReusable

        {

            get

            {

                return false;

            }

        }

    }

}

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