function deleteItem():void{
 var selectItems:Array = process_list.selectedItems;
 var selectIndex:Array = process_list.selectedIndices;
 selectIndex = selectIndex.sort(2);//索引按降序排序
 var iCount:int = selectItems.length;
 var sizeMum:Number = 0;
 for(var i:int=0;iiCount;i++){
  info.splice(selectIndex[i],1);
  fileRef.fileList.splice(selectIndex[i],1);//移除的选择项按索引从大到小移除，以便移除过程中索引不超界
 }
 for(var j:Number=0;jfileRef.fileList.length;j++){      
  sizeMum+=fileRef.fileList[j].size;     
 }   
 process_list.dataProvider = info;
 tip_txt.text="共"+fileRef.fileList.length+"个文件 "+(sizeMum/(1024*1024)).toFixed(4).toString()+"MB";
      
 if(info.length=0){
  delete_btn.enabled = false;
 }     
}

html xmlns="http://www.w3.org/1999/xhtml" >
head>
 title>无标题页/title>  
   style type="text/css教程" media="screen"> 
   html, body { height:100%; }
   body { margin:0; padding:0; overflow:auto; text-align:center; 
     background-color: #ffffff; } 
   #flashContent { display:none; }
  /style>
   
  script type="text/网页特效" src="swfobject.js">/script> 
  script type="text/javascript" >

   var swfVersionStr = "10.0.0";
   var xiSwfUrlStr = "playerProductInstall.swf";
   var flashvars = {};
   flashvars.url = "SaveFile.aspx?Param=ID|100,NAME|测试用户";
   var params = {};
   params.quality = "high";
   params.bgcolor = "#ffffff";
   params.allowscriptaccess = "sameDomain";
   params.allowfullscreen = "true";
   var attributes = {};
   attributes.id = "upload";
   attributes.name = "upload";
   attributes.align = "middle";
   swfobject.embedSWF(
    "upload.swf", "flashContent", 
    "587", "370", 
    swfVersionStr, xiSwfUrlStr, 
    flashvars, params, attributes);
 
   function uploadCompelete(){
    //完成后的操作，如页面跳转或关闭当前页
    document.getElementById('btnUpload').disabled = false;
   }
   function submitForm(){
    thisMovie("upload").uploadfile();
   }
   function thisMovie(movieName) {
    if (navigator.appName.indexOf("Microsoft") != -1) {
     return window[movieName];
    } else {
     return document[movieName];
    }
   }
   function disabledButton()
    {
    document.getElementById('btnUpload').disabled = true;
    }
 
  /script>
/head>
body>
 div id="flashContent" style="width:587px; height:380px">
   /div>
  br />
  input id="btnUpload" style="width: 71px" type="button" value="上 传" onclick="submitForm()" />
/body>
/html>
　　如上，页面放置一个按钮，执行upload.swf里面的uploadfile方法，在flex里面其实是回调了uploadHandler方法：
//===================
// 点击上传按钮
//===================
internal function uploadHandler():void{
 if(uploadFile_num!=0) return;
 if(process_list.dataProvider==null || info.length=0){
  Alert.show("您还未选择文件!","提示信息");
  return;
 }
 else
 {
  ExternalInterface.call("disabledButton"); //点上传后禁用按钮 
 }
 for(var i:Number=0;ifileRef.fileList.length;i++){    
  upload_size_total+=fileRef.fileList[i].size;          
 }         
 uploadfile(uploadFile_num); 
 add_btn.enabled = false; //点上传后禁用浏览按钮 
 delete_btn.enabled = false;//点上传后禁用删除按钮 
}
 
　　SaveFile.aspx页面主要是接收并存储文件，如下：
protected void Page_Load(object sender, EventArgs e)
{
 //string param = Request["Param"];
 string path = Server.MapPath("files/");
 if (!Directory.Exists(path))
 {
  Directory.CreateDirectory(path);
 }
 //HttpFileCollection files = Request.Files;
 //string fileName = string.Empty;
 //for (int i = 0; i  files.Count; i++)
 //{
 // fileName = Path.GetFileName(files[i].FileName).ToLower();
 // files[i].SaveAs(path + fileName);
 //}
 HttpPostedFile file = Request.Files["Filedata"]; //文件是一个一个异步提交过来，所以不需要循环文件集合
 if (file != null  file.ContentLength > 0)
 {
  file.SaveAs(path+Request.Form["filename"]);
 }
}