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Uploadify是JQuery的一个上传插件，实现的效果非常不错，带进度显示。Uploadify官方网址：http://www.uploadify.com/，在MVC中使用的方法可以参考 jQuery Uploadify在ASP.NET MVC3中的使用 和 Asp.net Mvc中使用uploadify实现图片缩放保存。
本文是一个简单的介绍Demo，主要是动态传递参数方法：通过formdata 向处理程序传递额外的表单数据：
<!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></title> <link href="uploadify/uploadify.css" type="text/css" rel="Stylesheet" /> <script type="text/javascript" src="uploadify/jquery-1.7.2.min.js"></script> <script type="text/javascript" src="uploadify/swfobject.js"></script> <script type="text/javascript" src="uploadify/jquery.uploadify.min.js"></script> <script type="text/javascript"> $(function () { var taskId = "<%= TaskID %>"; var activityId = "<%= ActivityId %>"; var userId = "<%= GetCurrentLoginUser().ID %>"; $("#<%=FileUpload1.ClientID %>").uploadify( { ‘swf‘: ‘uploadify/uploadify.swf‘, ‘uploader‘: ‘UploadHandler.aspx‘, ‘auto‘: false, ‘method‘: ‘post‘, ‘multi‘: true, ‘buttonText‘: ‘浏览‘, ‘buttonImg‘: ‘uploadify/browse.jpg‘, ‘folder‘: ‘../uploadfile‘, ‘fileDesc‘: ‘附件‘, ‘onUploadStart‘: function (event, data) { //this is where you will send the form //data, but remember to get if from post in the .ashx file, by contex.Request["gallaryId"] $("#<%=FileUpload1.ClientID %>").uploadify(‘settings‘, ‘formData‘, { ‘taskId‘: taskId, ‘activityId‘: activityId, ‘userId‘: userId, ‘secInfo‘: $("#<%=ddlsecInfo.ClientID %>").val()} //note hiddenGallaryId would //have the gallaryId which im sending through post , make sure it is rendered in your page( //i.e.not concealed by a multiview control e.t.c) ); } }); }); </script> </head> <body> <form id="form1" runat="server"> <asp:FileUpload ID="FileUpload1" runat="server" /> <asp:DropDownList ID="ddlsecInfo" runat="server"> <asp:ListItem Text="公开" Value="1"> </asp:ListItem> <asp:ListItem Text="普通" Value="2"> </asp:ListItem> <asp:ListItem Text="机密" Value="3"> </asp:ListItem> </asp:DropDownList> <a href="javascript: $(‘#<%=FileUpload1.ClientID %>‘).uploadify(‘upload‘,‘*‘)">上传</a> <a href="javascript:$(‘#<%=FileUpload1.ClientID %>‘).uploadify(‘cancel‘,‘*‘)">取消上传</a> </form> </body> </html>
基于MVC4+EasyUI的Web开发框架形成之旅--附件上传组件uploadify的使用
uploadify3.0详细使用说明
Mvc利用淘宝Kissy uploader实现图片批量上传附带瀑布流的照片墙
免费的HTML5版uploadify送上
转自：张善友 http://www.cnblogs.com/shanyou/p/3188195.html
使用jQuery Uploadify在ASP.NET 上传附件 (转)
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原文地址：http://www.cnblogs.com/changhua/p/4304436.html
