在ASP.NET中实现多文件上传

ASPX 代码

<!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--> <% @ Page Language = " C# " AutoEventWireup = " true " CodeFile = " MultiFileUpload.aspx.cs "
  Inherits = " MultiFileUpload " %>

<! 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 > 孟宪会多文件上传测试 </ 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 " , " 50 " )
      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" >
   < h3 > 多文件上传 </ h3 >
   用户名： < asp:TextBox ID ="TextBox1" runat ="server" ></ asp:TextBox >
   < div id ="_container" >
     < input type ="file" size ="50" name ="File" />
   </ div >
   < div >
     < input type ="button" value ="添加文件(Add)" onclick ="addFile()" />
   </ div >
   < div style ="padding:10px 0" >
     < asp:Button runat ="server" Text ="开始上传" ID ="UploadButton"
      onclick ="UploadButton_Click" ></ asp:Button >
   </ 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 >

 

C# 代码

<!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--> using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class MultiFileUpload : System.Web.UI.Page
{
     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/> " );
      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;
      }

    }
}