求多附件上传代码

html里面没有多附件上传的控件. 如果需要选择多附件,可以用flash上传. qq空间相册就是用flash多文件选择上传的.

不会啊。
http://topic.csdn.net/u/20100928/17/7c1e409c-6219-4b13-81e1-8ff1e0534ac2.html
看看这个贴子，发的上传，都可以多文件上传的

可以多文件上传啊     下面是例子：<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="duo_upfile_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>多文件上传测试</title>
    <script type="text/javascript">
    function addFile() {
      var div = document.createElement("div");
      var f = document.createElement("input");
      f.setAttribute("type", "file")
      f.setAttribute("name", "File")
      f.setAttribute("size", "30")
      div.appendChild(f)
      var d = document.createElement("input");
      d.setAttribute("type", "button")
      d.setAttribute("onclick", "deteFile(this)");
      d.setAttribute("value", "移除")
      div.appendChild(d)
      document.getElementById("_container").appendChild(div);
    }    function deteFile(o) {
      while (o.tagName != "DIV") o = o.parentNode;
      o.parentNode.removeChild(o);
    }
  </script></head>
<body>
<form id="form1" runat="server" method="post" enctype="multipart/form-data">
<div>
<table cellpadding="0" cellspacing="0" border="0" runat="server">
<tr><td>
今天是：<script language="javascript" type="text/javascript">
today=new Date();
function initArray(){
   this.length=initArray.arguments.length
   for(var i=0;i<this.length;i++)
   this[i+1]=initArray.arguments[i]  }
   var d=new initArray("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
   document.write("<font color=#000000 style='font-size:9pt;font-family: 宋体'> ",today.getYear(),"年",today.getMonth()+1,"月",today.getDate(),"日","  ",d[today.getDay()+1]," ","</font>" );
</script>
<script language="Javascript" type="text/javascript">
function MakeArrayday(size) {
this.length = size;
for(var i = 1; i <= size; i++) {
this[i] = "";
}
return this;
}
function MakeArraymonth(size) {
this.length = size;
for(var i = 1; i <= size; i++) {
this[i] = "";
}
return this;
}
function funClock() {
if (!document.layers && !document.all)
return;
var runTime = new Date();
var hours = runTime.getHours();
var minutes = runTime.getMinutes();
var seconds = runTime.getSeconds();
var dn = "";
if (hours >= 12) {
dn = "";
}
if (hours == 0) {
hours = 12;
}
if (minutes <= 9) {
minutes = "0" + minutes;
}
if (seconds <= 9) {
seconds = "0" + seconds;
}
movingtime = "<font color=#000000><b>"+ hours + ":" + minutes + ":" + seconds + " " + dn + "</b></font>";
if (document.layers) {
document.layers.C_clock.document.write(movingtime);
document.layers.C_clock.document.close();
}
else if (document.all) {
C_clock.innerHTML = movingtime;
}
setTimeout("funClock()", 1000)
}
window.onload = funClock;</script>
<span class="C_Clock" id="C_clock" style="POSITION: relative" />
</td>
</tr>
</table>
</div>
  <hr  style="border-style:inset"/>
  <h5>多文件上传</h5>  <asp:TextBox ID="TextBox2" runat="server" BorderStyle="Inset"></asp:TextBox>
  <hr  style="border-style:inset"/>
   用户名：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
    <br />
  <div id="_container">
    <input type="file" size="30" name="File" />
    <input type="button" value="增加" onclick="addFile()" />
  </div>
  <div>
  <br />
        
    <asp:Button runat="server" Text="开始上传" ID="UploadButton" onclick="UploadButton_Click"></asp:Button></div>
  <div style="padding:10px 0">
       </div>
  <div>
    <asp:Label ID="strStatus" runat="server" Font-Names="宋体" Font-Bold="True" Font-Size="9pt" Width="500px" BorderStyle="None" BorderColor="White">
      </asp:Label>
  </div>
  </form>
</body>
</html>
*********************************************************************************
using System;
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;public partial class duo_upfile_Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {    }
    protected void UploadButton_Click(object sender, EventArgs e)
    {
        ///'遍历File表单元素
        HttpFileCollection files = HttpContext.Current.Request.Files;        /// '状态信息
        System.Text.StringBuilder strMsg = new System.Text.StringBuilder("您输入的用户名是：" + TextBox1.Text + "<br/><br/><br/>");
        strMsg.Append("上传的文件分别是：<hr color='red'/>");
        try
        {
            for (int iFile = 0; iFile < files.Count; iFile++)
            {
                ///'检查文件扩展名字
                HttpPostedFile postedFile = files[iFile];
                string fileName, fileExtension;
                fileName = System.IO.Path.GetFileName(postedFile.FileName);
                if (fileName != "")
                {
                    fileExtension = System.IO.Path.GetExtension(fileName);
                    strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br>");
                    strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br>");
                    strMsg.Append("上传文件的文件名：" + fileName + "<br>");
                    strMsg.Append("上传文件的扩展名：" + fileExtension + "<br><hr>");
                    ///'可根据扩展名字的不同保存到不同的文件夹
                    ///注意：可能要修改你的文件夹的匿名写入权限。
                    postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("images/") + fileName);
                }
            }
            strStatus.Text = strMsg.ToString();

        }
        catch (System.Exception Ex)
        {
            strStatus.Text = Ex.Message;
        }    }
}

一次选择多个的方法目前有2个：
1，采用 Firefox3.6之后的版本，可以支持多选
2，自己写插件

http://www.xueit.com/asp.net/show-5162-2.aspx

http://www.cnblogs.com/chenping-987123/archive/2010/09/25/1834372.html
jquery上传文件的

http://www.msaspx.com/?dotnet/thread-730-1-1

调试易

求多附件上传代码

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