ASP.NET多文件上传控件Uploadify的使用方法

<script type="text/html" id="liTemp">
 <li>
  <!--上传后状态-->
  <div class="VedioChange">
  <dl>
   <dt>
   <a href="javascript:;">
    <img width="140" height='92' src="{src}" alt="{alt}" /><span class="playIcon"></span></a>
   <input type="hidden" name="HdFileURL" value="{FilePath}" /><br />
   <input type="hidden" name="HdImagePath" value="{ImagePath}" /><br />
   <input type="hidden" name="HdSourceName" value="{SourceName}" /><br />
   <input type="hidden" name="HdFileSize" value="{FileSize}" /><br />
   </dt>
   <dd><a href="javascript:;" class="lookBig">预览</a> &nbsp;&nbsp;<a href="javascript:;" class="reselect" onclick="del(this)">关闭</a></dd>
  </dl>
  </div>
  <!--上传后状态-->
 </li>
 </script>

<script type="text/javascript">
 $(document).ready(function () {
  $("#uploadify").uploadify({
  'uploader': 'js/jquery.uploadify-v2.1.4/uploadify.swf',
  'script': 'UploadHandler.ashx',
  'cancelImg': 'js/jquery.uploadify-v2.1.4/cancel.png',
  'folder': '/UploadFile/',
  'queueID': 'fileQueue',
  'auto': true,
  'multi': true,
  'onComplete': function (event, queueID, fileObj, response, data) {//当单个文件上传完成后触发
   //event:事件对象(the event object)
   //ID:该文件在文件队列中的唯一表示
   //fileObj:选中文件的对象，他包含的属性列表
   //[name] - 已上传文件的名称
   //[filePath] - 已上传文件在服务器上的路径
   //[size] – 文件的大学，单位为字节
   //[creationDate] – 文件的创建日期
   //[modificationDate] – 文件的最后修改日期
   //[type] – 文件的扩展名，以‘.'开始 
   //response:服务器端返回的Response文本，我这里返回的是处理过的文件名称
   //data：文件队列详细信息和文件上传的一般数据
   $("#preview").append(dataTemplate($("#liTemp").text(), { src: response, alt: fileObj.name }));
  },
  'onError': function (event, queueID, fileObj) {//当单个文件上传出错时触发
   alert("文件:" + fileObj.name + " 上传失败！");
  },
  });
 });
 function del(o) {
  $(o).closest("li").remove();
 }
 </script>

<div class="rt">
 <ul class="clearfix w_VedioChange" id="preview">
 </ul>
</div>

<div id="fileQueue"></div>

 /// <summary>
 /// Summary description for UploadHandler
 /// </summary>
 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));

  var pathArr = uploadPath.Split('\\');

  context.Response.Write(HttpContext.Current.Request.Url.Scheme
   + "://"
   + HttpContext.Current.Request.Url.Authority
   + "/"
   + pathArr[pathArr.Length - 2]
   + "/"
   + pathArr[pathArr.Length - 1]
   + "/"
   + file.FileName);
  }
  else
  {
  context.Response.Write("0");
  }
 }

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