js实现文件批量上传，支持ie firefox

该功能实现了多文件上传功能，点击添加是同时将文件显示在下面的列表。支持删除功能。

using  System.Data;
using  System.Configuration;
using  System.Collections;
using  System.Web;
using  System.Web.Security;
using  System.Web.UI;
using  System.Web.UI.WebControls;
using  System.Web.UI.WebControls.WebParts;
using  System.Web.UI.HtmlControls;
using  System.IO;
using  System.Text.RegularExpressions;

public  partial  class  Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Regex badCharReplace = new Regex(@"^([<>""'%;()&])$");

    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        /////附件
        HttpFileCollection fileList = HttpContext.Current.Request.Files;
        //保存附件
        for (int i = 0; i < fileList.Count; i++)
        {   ///添加单个附件
            HttpPostedFile file = fileList[i];
            if (file.FileName.Length <= 0 || file.ContentLength <= 0)
            {
                break;
            }
            // 保存附件到硬盘中
            file.SaveAs(MapPath("Attachments/" + Path.GetFileName(file.FileName)));

        }
    }
}

前台代码

@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.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  runat ="server" >
     < title > Untitled Page </ title >
     < script  language ="javascript"  type ="text/javascript" >     
  function addFile()
  {
    //创建输入元素(通用代码)
    //添加上传文件按钮
    var fileUpLoadbutton = document.createElement("input"); 
    fileUpLoadbutton.setAttribute("type","file");
    fileUpLoadbutton.setAttribute("size","50");
    fileUpLoadbutton.setAttribute("name","File");
    fileUpLoadbutton.setAttribute("class","ButtonCss");
    //添加删除按钮
    var deleteImgbutton = document.createElement("img"); 
    deleteImgbutton.setAttribute("src","images/Btdelete.gif");
    deleteImgbutton.setAttribute("style","width: 38px; height: 20px");
    //给
    deleteImgbutton.onclick=function(){deleteRow(1,this);};

    
    var lastIndex= document.getElementById('FileList').childNodes.length-1;
    
    
     if(lastIndex>-1)
     {
    
     
        var hideFile=document.getElementById('FileList').childNodes[lastIndex];
        
         if(hideFile.value=="")
         {
            return;
         }
        
        hideFile.style.display="none";
        var cell1 = document.createElement("td");
        var cell2 = document.createElement("td");  
       // var str = hideFile.value;
        var myList =new Array();
        myList=  hideFile.value.split("""");
        cell1.innerHTML = myList[myList.length-1];// hideFile.value;         
        cell2.appendChild(deleteImgbutton);
        var row = document.createElement("tr");
        row.appendChild(cell1); 
        row.appendChild(cell2);
        var tBody = document.createElement("tbody").appendChild(row);
        //识别当前浏览器
        if(navigator.appName.indexOf("Explorer") > -1)
        {
            document.getElementById("FileTable").childNodes[0].appendChild(tBody); 
        }
        else
        {
            document.getElementById("FileTable").appendChild(tBody);
        }   
     }
     
     document.getElementById('FileList').appendChild(fileUpLoadbutton);
  }
  
   function deleteRow(targPos,btnObj)
    {
       var tabObj=document.getElementById("FileTable");
        
        var fileListLength = document.getElementById('FileList').childNodes.length;
        
        var tabRowsLength = tabObj.rows.length;
         
        for(var i =0;i<tabRowsLength;i++)
        {
            if(tabObj.getElementsByTagName('img')[i]==btnObj)
            {
                 //删除当前选中行
                tabObj.deleteRow(i+targPos);
                //获得选中行对应的上传我文件对象
                var oldChild = document.getElementById('FileList').childNodes[i];
                //删除上传文件对象
                document.getElementById('FileList').removeChild(oldChild);
              
            }          
        }
  }
  
     </ script >
</ head >
< body >
     < form  id ="form1"  runat ="server" >
     < div >
     < table  border ="0"  cellpadding ="0"  cellspacing ="0"  height ="26"  width ="100%" >
             < tr >
                 < td  align ="left"  valign ="middle" >
                     < asp:Button  ID ="Button2"  runat ="server"  OnClick ="Button2_Click"  Text ="提交"  />
                    </ td >
             </ tr >
         </ table >
          < table  border ="0"  cellpadding ="0"  cellspacing ="0"  height ="26"  width ="100%" >
             < tr >
                 < td  align ="left"  valign ="middle" >
                    < DIV  id ="FileList" >< input  id ="File1"  runat ="server"  name ="File"  size ="50"  type ="file"  /></ DIV >
                 </ td >
                 < td >
                    < input  id ="Button1"  onclick ="addFile()"  size ="26"  style ="height: 26px"  type ="button"  value ="增加附件"  />
                 </ td >
             </ tr >
         </ table >
          < table  style ="width:100%"   id ="FileTable" >
         
             < tr >
                 < td  style ="width:80%" > FileName </ td >
                 < td  style ="width:80%" > button </ td >
                
             </ tr >
           
         </ table >
     </ div >
     </ form >
</ body >
</ html >

Tag标签: js, 文件批量上传

转载于:https://www.cnblogs.com/hzuIT/articles/1307934.html