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动态添加到表单的input 在表单提交到ashx文件后不能获取提交的值?

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[待解决问题]

如题====

代码如下(所有代码):

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="FileUpload.aspx.cs" Inherits="Default2" %>

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<link href="lib/ligerUI/skins/Silvery/css/ligerui-all.css" rel="stylesheet" type="text/css" />
<title>文件上传</title>
<script language="javascript" type="text/javascript">
var flag=0;//是否有文件
var count=1;
var idd=1;
var filename="";
function GetQueryString(name) {

   var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)","i");

   var r = window.location.search.substr(1).match(reg);

   if (r!=null) return unescape(r[2]); return null;

}
function check(id)
{
   if(document.getElementById(id).value=="")
   {
     document.getElementById("Label1").style.display="block";
     $("idBtnupload").disabled = $("idBtndel").disabled=true;
   }
   else
   {
    document.getElementById("Label1").style.display="none";
    if(flag=="1")
     {
      $("idBtnupload").disabled = $("idBtndel").disabled=false;
     }
     else
     {
     $("idBtnupload").disabled = $("idBtndel").disabled=true;
     }
   }
}
</script>
</head>
<body>
<style>
.fu_list {
 width:600px;
 background:#ebebeb;
 font-size:12px;
}
.fu_list td {
 padding:5px;
 line-height:20px;
 background-color:#fff;
}
.fu_list table {
 width:100%;
 border:1px solid #ebebeb;
}
.fu_list thead td {
 background-color:#f4f4f4;
}
.fu_list b {
 font-size:14px;
}
/*file容器样式*/
a.files {
 width:90px;
 height:30px;
 overflow:hidden;
 display:block;
 border:1px solid #BEBEBE;
 background:url(img/fu_btn.gif) left top no-repeat;
 text-decoration:none;
}
a.files:hover {
 background-color:#FFFFEE;
 background-position:0 -30px;
}
/*file设为透明,并覆盖整个触发面*/
a.files input {
 margin-left:-350px;
 font-size:30px;
 cursor:pointer;
 filter:alpha(opacity=0);
 opacity:0;
}
/*取消点击时的虚线框*/
a.files, a.files input {
 outline:none;/*ff*/
 hide-focus:expression(this.hideFocus=true);/*ie*/
}
</style>
    <style type="text/css">
        .l-table-edit {}
        .l-table-edit-td{ padding:4px;}
        .l-button-submit{width:60px; float:left; margin-left:10px}
    </style>
<form id="uploadForm" runat="server" action="File.ashx" method="get">
  <table border="0" cellspacing="1" class="fu_list" align="center">
    <thead>
      <tr>
        <td colspan="2"><b>上传文件</b></td>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td align="right" width="15%" style="line-height:35px;">添加文件:</td>
        <td><a href="javascript:void(0);" class="files" id="idFile"></a> <img id="idProcess" style="display:none;" src="img/loading.gif" /></td>
      </tr>
      <tr>
        <td colspan="2"><table border="0" cellspacing="0">
            <thead>
              <tr>
                <td>文件路径</td>
                <td width="100"></td>
                <td width="100"></td>
              </tr>
            </thead>
            <tbody id="idFileList">
            </tbody>
          </table></td>
      </tr>
      <tr><td colspan="2" style="color:gray"><asp:Label ID="Label1" runat="server" Text="所有文件说明都不能为空" ForeColor="Red"  style="display:none" ></asp:Label><input id="oid" name="oid" type="hidden" runat="server"/></td></tr>
      <tr>
        <td colspan="2" style="color:gray">温馨提示:最多可同时上传 <b id="idLimit"></b> 个文件。 </td>
      </tr>
      <tr>
        <td colspan="2" align="center" id="idMsg">
        <input type="hidden" name="fullpath" id="fullpath" runat="server"/>
        <input type="hidden" name="realname" id="realname" runat="server"/>
            <input type="button" value="开始上传" id="idBtnupload" class="l-button l-button-submit" disabled="disabled"/>
           <input type="button" value="全部取消" class="l-button l-button-submit" id="idBtndel" disabled="disabled" />      
        </td>
      </tr>
    </tbody>
  </table>
</form>
    <script src="lib/jquery/jquery-1.3.2.min.js" type="text/javascript"></script>
    <script src="lib/ligerUI/js/plugins/ligerDrag.js" type="text/javascript"></script>
    <script src="lib/ligerUI/js/plugins/ligerDialog.js" type="text/javascript"></script>

<script type="text/javascript">
function getFileName(path){
var pos1 = path.lastIndexOf('/');
var pos2 = path.lastIndexOf('\\');
var pos  = Math.max(pos1, pos2)
if( pos<0 )
return path;
else
return path.substring(pos+1);
}


var isIE = (document.all) ? true : false;

var $ = function (id) {
    return "string" == typeof id ? document.getElementById(id) : id;
};

var Class = {
  create: function() {
    return function() {
      this.initialize.apply(this, arguments);
    }
  }
}

var Extend = function(destination, source) {
 for (var property in source) {
  destination[property] = source[property];
 }
}

var Bind = function(object, fun) {
 return function() {
  return fun.apply(object, arguments);
 }
}

var Each = function(list, fun){
 for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); }
};

//文件上传类
var FileUpload = Class.create();
FileUpload.prototype = {
  //表单对象,文件控件存放空间
  initialize: function(form, folder, options) {
 
 this.Form = $(form);//表单
 this.Folder = $(folder);//文件控件存放空间
 this.Files = [];//文件集合
 
 this.SetOptions(options);
 
 this.FileName = this.options.FileName;
 this._FrameName = this.options.FrameName;
 this.Limit = this.options.Limit;
 this.Distinct = !!this.options.Distinct;
 this.ExtIn = this.options.ExtIn;
 this.ExtOut = this.options.ExtOut;
 
 this.onIniFile = this.options.onIniFile;
 this.onEmpty = this.options.onEmpty;
 this.onNotExtIn = this.options.onNotExtIn;
 this.onExtOut = this.options.onExtOut;
 this.onLimite = this.options.onLimite;
 this.onSame = this.options.onSame;
 this.onFail = this.options.onFail;
 this.onIni = this.options.onIni;
 
 if(!this._FrameName){
  //为每个实例创建不同的iframe
  this._FrameName = "uploadFrame_" + Math.floor(Math.random() * 1000);
  //ie不能修改iframe的name
  var oFrame = isIE ? document.createElement("<iframe name=\"" + this._FrameName + "\">") : document.createElement("iframe");
  //为ff设置name
  oFrame.name = this._FrameName;
  oFrame.style.display = "none";
  //在ie文档未加载完用appendChild会报错
  document.body.insertBefore(oFrame, document.body.childNodes[0]);
 }
 
 //设置form属性,关键是target要指向iframe
 this.Form.target = this._FrameName;
 this.Form.method = "post";
 //注意ie的form没有enctype属性,要用encoding
 this.Form.encoding = "multipart/form-data";

 //整理一次
 this.Ini();
  },
  //设置默认属性
  SetOptions: function(options) {
    this.options = {//默认值
  FileName: "",//文件上传控件的name,配合后台使用
  FrameName: "",//iframe的name,要自定义iframe的话这里设置name
  onIniFile: function(){},//整理文件时执行(其中参数是file对象)
  onEmpty: function(){},//文件空值时执行
  Limit:  0,//文件数限制,0为不限制
  onLimite: function(){},//超过文件数限制时执行
  Distinct: true,//是否不允许相同文件
  onSame:  function(){},//有相同文件时执行
  ExtIn:  [],//允许后缀名
  onNotExtIn: function(){},//不是允许后缀名时执行
  ExtOut:  [],//禁止后缀名,当设置了ExtIn则ExtOut无效
  onExtOut: function(){},//是禁止后缀名时执行
  onFail:  function(){},//文件不通过检测时执行(其中参数是file对象)
  onIni:  function(){}//重置时执行
    };
    Extend(this.options, options || {});
  },
  //整理空间
  Ini: function() {
 //整理文件集合
 this.Files = [];
 //整理文件空间,把有值的file放入文件集合
 Each(this.Folder.getElementsByTagName("input"), Bind(this, function(o){
  if(o.type == "file"){ o.value && this.Files.push(o); this.onIniFile(o); }
 }))
 //插入一个新的file
 var file = document.createElement("input");
 file.name = this.FileName; file.type = "file"; file.onchange = Bind(this, function(){ this.Check(file); this.Ini(); });
 this.Folder.appendChild(file);
 //执行附加程序
 this.onIni();
  },
  //检测file对象
  Check: function(file) {
 //检测变量
 var bCheck = true;
 //空值、文件数限制、后缀名、相同文件检测
 if(!file.value){
  bCheck = false; this.onEmpty();
 } else if(this.Limit && this.Files.length >= this.Limit){
  bCheck = false; this.onLimite();
 } else if(!!this.ExtIn.length && !RegExp("\.(" + this.ExtIn.join("|") + ")$", "i").test(file.value)){
  //检测是否允许后缀名
  bCheck = false; this.onNotExtIn();
 } else if(!!this.ExtOut.length && RegExp("\.(" + this.ExtOut.join("|") + ")$", "i").test(file.value)) {
  //检测是否禁止后缀名
  bCheck = false; this.onExtOut();
 } else if(!!this.Distinct) {
  Each(this.Files, function(o){ if(o.value == file.value){ bCheck = false; } })
  if(!bCheck){ this.onSame(); }
 }
 //没有通过检测
 !bCheck && this.onFail(file);
  },
  //删除指定file
  Delete: function(file) {
 //移除指定file
 $("idBtnupload").disabled = $("idBtndel").disabled=true;
 this.Folder.removeChild(file); this.Ini();
  },
  //删除全部file
  Clear: function() {
 //清空文件空间
 $("idBtnupload").disabled = $("idBtndel").disabled=true;
 Each(this.Files, Bind(this, function(o){ this.Folder.removeChild(o); })); this.Ini();
  }
}
var fu = new FileUpload("uploadForm", "idFile", { Limit: 3,
 onIniFile: function(file){ file.value ? file.style.display = "none" : this.Folder.removeChild(file);
 document.getElementById("fullpath").value=file.value;document.getElementById("realname").value=getFileName(file.value).substring(0,getFileName(file.value).indexOf("."));
 document.getElementById("oid").value=GetQueryString("oid");
  filename=getFileName(file.value).substring(0,getFileName(file.value).indexOf("."));//获取文件名
  flag=1;document.getElementById("Label1").style.display="none";
  },
 onEmpty: function(){ alert("请选择一个文件"); },
 onLimite: function(){ alert("超过上传限制"); },
 onSame: function(){ alert("已经有相同文件");},
 onNotExtIn: function(){ alert("只允许上传" + this.ExtIn.join(",") + "文件"); },
 onFail: function(file){ this.Folder.removeChild(file); },
 onIni: function(){
  //显示文件列表
  
  var arrRows = [];
  
  if(this.Files.length){
   var oThis = this;
   idd=1;
   Each(this.Files, function(o){
    var a = document.createElement("a"); a.innerHTML = "取消"; a.href = "javascript:void(0);";

    a.onclick = function(){ oThis.Delete(o); return false;};
    var inputt= document.createElement("input");
    //idd=count;
    inputt.id="txt"+idd.toString();
    inputt.type="text";
    inputt.runat="server"
    inputt.name="name"+idd.toString();
    inputt.value=getFileName(o.value).substring(0,getFileName(o.value).indexOf("."));
    inputt.onchange=function(){check(this.id);};
    
    arrRows.push([o.value, a,inputt]);
    
    idd++;
   });
  } else { arrRows.push(["<font color='gray'>没有添加文件</font>", "&nbsp;"]); }
  AddList(arrRows);
  
  //设置按钮
  $("idBtnupload").disabled = $("idBtndel").disabled = this.Files.length <= 0;
 }
});

$("idBtnupload").onclick = function(){
 //显示文件列表
 var arrRows = [];
 Each(fu.Files, function(o){ arrRows.push([o.value, "&nbsp;"]); });
 AddList(arrRows);
 
 fu.Folder.style.display = "none";
 $("idProcess").style.display = "";
 $("idMsg").innerHTML = "正在添加文件,请稍候……<br />有可能因为网络问题,出现程序长时间无响应,请点击“<a href='?'><font color='red'>取消</font></a>”重新上传文件";
 
 fu.Form.submit();
 
}

//用来添加文件列表的函数
function AddList(rows){
 //根据数组来添加列表
 var FileList = $("idFileList"), oFragment = document.createDocumentFragment();
 //用文档碎片保存列表
 Each(rows, function(cells){
  var row = document.createElement("tr");
  Each(cells, function(o){
   var cell = document.createElement("td");
   if(typeof o == "string"){ cell.innerHTML = o; }else{ cell.appendChild(o); }
   row.appendChild(cell);
  });
  oFragment.appendChild(row);
 })
 //ie的table不支持innerHTML所以这样清空table
 while(FileList.hasChildNodes()){ FileList.removeChild(FileList.firstChild); }
 FileList.appendChild(oFragment);
}


$("idLimit").innerHTML = fu.Limit;

//$("idExt").innerHTML = fu.ExtIn.join(",");

$("idBtndel").onclick = function(){ fu.Clear(); }

//在后台通过window.parent来访问主页面的函数
function Finish(msg){ alert(msg);window.parent.location.reload(); }

</script>
</body>
</html>

代石磊的主页 代石磊 | 初学一级 | 园豆:0
提问于:2012-03-15 13:13
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所有回答(1)
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<form runat="server" action="File.ashx" method="get">

首先,上传文件不能用get,要用post

其次,你这个表单是把文件提交到File.ashx文件去了,如果那个文件里获取不到,看下那个文件的代码

丁学 | 园豆:18530 (专家六级) | 2012-03-16 09:36
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