页面文件

 

 

代码 
 1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default" %>
 2 
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 4 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 5 <html xmlns="http://www.w3.org/1999/xhtml">
 6 <head id="Head1" runat="server">
 7     <title>多文件上传</title>
 8 
 9     <script type="text/javascript">
10     function addFile() {
11       var div = document.createElement("div");
12       var f = document.createElement("input");
13       f.setAttribute("type", "file")
14       f.setAttribute("name", "File")
15       f.setAttribute("size", "50")
16       div.appendChild(f)
17       var d = document.createElement("input");
18       d.setAttribute("type", "button")
19       d.setAttribute("onclick", "deteFile(this)");
20       d.setAttribute("value", "移除")
21       div.appendChild(d)
22       document.getElementById("_container").appendChild(div);
23     }
24 
25     function deteFile(o) {
26       while (o.tagName != "DIV") o = o.parentNode;
27       o.parentNode.removeChild(o);
28     }
29     </script>
30 
31 </head>
32 <body>
33     <form id="form1" runat="server" method="post" enctype="multipart/form-data">
34         <h3>
35             多文件上传</h3>
36        
37         <div id="_container">
38             <input type="file" size="50" name="File" />
39         </div>
40         <div>
41             <input type="button" value="添加文件(Add)" onclick="addFile()" id="Button1" />
42         </div>
43         <div style="padding: 10px 0">
44             <asp:Button runat="server" Text="开始上传" ID="UploadButton" OnClick="UploadButton_Click">
45             </asp:Button>
46         </div>
47         <div>
48             <asp:Label ID="strStatus" runat="server" Font-Names="宋体" Font-Bold="True" Font-Size="9pt"
49                 Width="500px" BorderStyle="None" BorderColor="White"></asp:Label>
50         </div>
51     </form>
52 </body>
53 </html>
54

 

 

 

 

后台代码

 

后台代码 
 1 using System;
 2 using System.Collections.Generic;
 3 
 4 using System.Web;
 5 using System.Web.UI;
 6 using System.Web.UI.WebControls;
 7 
 8 public partial class Default : System.Web.UI.Page
 9 {
10     protected void UploadButton_Click(object sender, EventArgs e)
11     {
12         ///'遍历File表单元素
13         HttpFileCollection files = HttpContext.Current.Request.Files;
14 
15         /// '状态信息
16         System.Text.StringBuilder strMsg = new System.Text.StringBuilder("");
17         strMsg.Append("上传的文件分别是：<hr color='red'/>");
18         try
19         {
20             for (int iFile = 0; iFile < files.Count; iFile++)
21             {
22                 ///'检查文件扩展名字
23                 HttpPostedFile postedFile = files[iFile];
24                 string fileName, fileExtension;
25                 fileName = System.IO.Path.GetFileName(postedFile.FileName);
26                 if (fileName != "")
27                 {
28                     fileExtension = System.IO.Path.GetExtension(fileName);
29                     strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br>");
30                     strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br>");
31                     strMsg.Append("上传文件的文件名：" + fileName + "<br>");
32                     strMsg.Append("上传文件的扩展名：" + fileExtension + "<br><hr>");
33                     ///'可根据扩展名字的不同保存到不同的文件夹
34                     ///注意：可能要修改你的文件夹的匿名写入权限。
35                     postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("images/") + fileName);
36                 }
37             }
38             strStatus.Text = strMsg.ToString();
39         }
40         catch (System.Exception Ex)
41         {
42             strStatus.Text = Ex.Message;
43         }
44 
45     }
46 }
47