Jquery Uploadify上传带进度条的简单实例

代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="UpLoad.aspx.cs" Inherits="UploadifyDemo_UpLoad" %>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Jquery Uploadify上传带进度条</title>
    <link href="js/jquery.uploadify-v2.1.4/uploadify.css" rel="stylesheet" type="text/css" />
    <script type="text/javascript" src="js/jquery.uploadify-v2.1.4/jquery-1.4.2.min.js"></script>
    <script type="text/javascript" src="js/jquery.uploadify-v2.1.4/swfobject.js"></script>
    <script type="text/javascript" src="js/jquery.uploadify-v2.1.4/jquery.uploadify.v2.1.4.min.js"></script>
    <script type="text/javascript">
        $(document).ready(function () {
            $("#uploadify").uploadify({
                'uploader': 'js/jquery.uploadify-v2.1.4/uploadify.swf', //uploadify.swf文件的路径
                'script': 'UploadHandler.ashx', //处理文件上传的后台脚本的路径
                'cancelImg': 'js/jquery.uploadify-v2.1.4/cancel.png',
                'folder': 'UploadFile/<% = subpathName %>', //上传文件夹的路径
                'queueID': 'fileQueue', //页面中，你想要用来作为文件队列的元素的id
                'auto': false, //当文件被添加到队列时，自动上传
                'multi': true, //设置为true将允许多文件上传
                'fileExt': '*.jpg;*.gif;*.png', //允许上传的文件后缀
                'fileDesc': 'Web Image Files (.JPG, .GIF, .PNG)', //在浏览窗口底部的文件类型下拉菜单中显示的文本
                'sizeLimit': 102400,  //上传文件的大小限制，单位为字节 100k
                'onCancel': function (event, ID, fileObj, data) { //当从上传队列每移除一个文件时触发一次
                    alert('The upload of ' + fileObj.name + ' has been canceled!');
                },
                'onComplete': function (event, ID, fileObj, response, data) { //每完成一次文件上传时触发一次
                    alert('There are ' + data.fileCount + ' files remaining in the queue.');
                },
                'onAllComplete': function (event, data) { //当上传队列中的所有文件都完成上传时触发
                    alert(data.filesUploaded + ' files uploaded successfully!');
                }
            });
        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>

</div>
    </form>

<div id="fileQueue"></div>
    <input type="file" name="uploadify" id="uploadify" />
    <p>
        <a href="javascript:$('#uploadify').uploadifyUpload()">上传</a>|
        <a href="javascript:$('#uploadify').uploadifyClearQueue()">取消上传</a>
    </p>
</body>
</html>

代码如下:

<%@ WebHandler Language="C#" Class="UploadHandler" %>

using System;
using System.Web;
using System.IO;

public class UploadHandler : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/plain";
        context.Response.Charset = "utf-8";

HttpPostedFile file = context.Request.Files["Filedata"];
        string uploadPath = HttpContext.Current.Server.MapPath(@context.Request["folder"]);

if (file != null)
        {
            if (!Directory.Exists(uploadPath))
            {
                Directory.CreateDirectory(uploadPath);
            }
            file.SaveAs(Path.Combine(uploadPath, file.FileName));
            context.Response.Write("1");
        }
        else
        {
            context.Response.Write("0");
        }
    }

public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}