ASP.NET多文件上传
自己编写了一个多文件所上传的功能，与大家共享，不足之处望多多指教。
页面部分：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" ValidateRequest="false" %>
<!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>Untitled Page</title>
<script type="text/javascript">
//客户端添加附近
function addFile(){
var str='<input type="file" name="File"/><input type="button" value="Remove" onclick="remove(this)"/><br/>';
document.all.files.insertAdjacentHTML("beforeEnd",str);
}
//客户端删除附近
function remove(obj){
obj.style.display="none";
obj.nextSibling.style.display="none";
obj.previousSibling.style.display="none";
obj.previousSibling.disabled="disabled";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<div id="files">
<%--此处必须有一个asp.net的服务器FileUpload控件--%>
多文件上传<br />
<asp:FileUpload ID="FileUpload1" runat="server" /><input type="button" value="Remove" onclick="remove(this)"/><br />
</div>
<input id="Button1" type="button" value="Add" onclick="addFile()"/>
<input id="Button2" type="button" value="Reset" onclick="this.form.reset()" />
<asp:Button ID="Button3" runat="server" OnClick="Button3_Click" Text="Upload" CausesValidation="False" /></div>
</form>
</body>
</html>
代码部分：
using System;
using System.Data;
using System.Configuration;
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;
using System.IO;
using System.Net;
using System.Text;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button3_Click(object sender, EventArgs e)
{
HttpFileCollection fileList = HttpContext.Current.Request.Files;
//HttpFileCollection fileList = Request.Files;
StringBuilder strb = new StringBuilder();
for (int i = 0; i < fileList.Count; i++)
{
HttpPostedFile file = fileList[i];
string fileName = Path.GetFileName(file.FileName);
string fileExtension = Path.GetExtension(fileName);
if (file.ContentLength > 0)
{
file.SaveAs(Server.MapPath("Upload/" + fileName));
strb.Append(string.Format("文件{0}上传成功，扩展名为{1}\\n", fileName, fileExtension));
}
}
//提示上传情况
ClientScript.RegisterClientScriptBlock(typeof(Page), "", "alert('" + strb.ToString() + "')", true);
}
}
