.NET中实现多个文件的上传

<% @ Page language="c#" Codebehind="WebForm2.aspx.cs" AutoEventWireup="false" Inherits="ZKSTAT.WebForm2"  %>
<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"  >
< HTML >
    
< HEAD >
        
< title > WebForm2 </ title >
        
< meta  name ="GENERATOR"  Content ="Microsoft Visual Studio .NET 7.1" >
        
< meta  name ="CODE_LANGUAGE"  Content ="C#" >
        
< meta  name ="vs_defaultClientScript"  content ="JavaScript" >
        
< meta  name ="vs_targetSchema"  content ="http://schemas.microsoft.com/intellisense/ie5" >
        
< script  language ="JavaScript" >
    
function addFile()
    
{
     
var str = '<INPUT type="file" size="50" NAME="File">'
     document.getElementById('MyFile').insertAdjacentHTML(
"beforeEnd",str)
    }

        
</ script >
    
</ HEAD >
    
< body >
        
< form  id ="Form1"  method ="post"  runat ="server"  enctype ="multipart/form-data" >
            
< center >
                
< asp:Label  Runat ="server"  ID ="MyTitle" > 多上文件上传 </ asp:Label >
                
< id ="MyFile" >< INPUT  type ="file"  size ="50"  NAME ="File" ></ P >
                
< P >
                    
< input  type ="button"  value ="增加(Add)"  onclick ="addFile()" >
                    
< asp:Button  Runat ="server"  Text ="上传"  ID ="Upload" ></ asp:Button >
                    
< input  onclick ="this.form.reset()"  type ="button"  value ="重置(ReSet)" >
                
</ P >
            
</ center >
            
< align ="center" >
                
< asp:Label  id ="strStatus"  runat ="server"  Font-Names ="宋体"  Font-Bold ="True"  Font-Size ="9pt"  Width ="500px"
                    BorderStyle
="None"  BorderColor ="White" ></ asp:Label >
            
</ P >
        
</ form >
    
</ body >
</ HTML >


using  System;
using  System.Collections;
using  System.ComponentModel;
using  System.Data;
using  System.Drawing;
using  System.Web;
using  System.Web.SessionState;
using  System.Web.UI;
using  System.Web.UI.WebControls;
using  System.Web.UI.HtmlControls;

namespace  ZKSTAT
{
    
/// <summary>
    
/// WebForm2 的摘要说明。
    
/// </summary>

    public class WebForm2 : System.Web.UI.Page
    
{
        
protected System.Web.UI.WebControls.Label MyTitle;
        
protected System.Web.UI.WebControls.Button Upload;
        
protected System.Web.UI.WebControls.Label strStatus;
    
        
private void Page_Load(object sender, System.EventArgs e)
        
{
            
// 在此处放置用户代码以初始化页面
            if (this.IsPostBack) this.SaveFiles();

        }


        
Web 窗体设计器生成的代码

        
private Boolean SaveFiles()
        
{
            
///'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();
            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>");
                        
long size = postedFile.ContentLength;
                        
string fileSizeStr="";
                        
if(size > 1000000) fileSizeStr = size/1000000 + " Mb";
                        
else if(size > 1000) fileSizeStr = size/1000 + " Kb";
                        
else fileSizeStr = size + " b";
                        strMsg.Append(
"上传文件大小:"+fileSizeStr+"<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("Files/") + fileName);
                    }

                }

                strStatus.Text 
= strMsg.ToString();
                
return true;
            }

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

        }


    }

}

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