<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Demo._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script language="JavaScript">
function addFile()
{
var str = '<INPUT type="file" size="50" NAME="File">' document.getElementById('MyFile').insertAdjacentHTML("beforeEnd",str)
}</script><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>Untitled Page</title></head><body> <form id="form1" runat="server" enctype="multipart/form-data"> <input type="button" value="增加(Add)" onclick="addFile()"> <input onclick="this.form.reset()" type="button" value="重置(ReSet)"> <asp:Button Runat="server" Text="上传" ID="Upload" OnClick="Upload_Click1" ></asp:Button> <div id="MyFile"> <input type="file" name="File" /> </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;namespace Demo{ public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) {
} protected void Upload_Click1(object sender, EventArgs e) { HttpFileCollection _files = System.Web.HttpContext.Current.Request.Files; for (int i = 0; i < _files.Count; i++) { _files[i].SaveAs(Server.MapPath("~/Files/" + _files[i].FileName)); } } }}