在ASP.NET中实现多文件上传
aspx文件：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="多文件上传.aspx.cs" Inherits="Image" %>
<!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>无标题页</title>
<script type="text/javascript">
function addFile()
{
today = new Date();
var _Date = today.getDate() + "a" + today.getHours() + "b" + today.getMinutes() + "c" + today.getSeconds();
var _DIV = today.getDate() + "c" + today.getHours() + "b" + today.getMinutes() + "a" + today.getSeconds();
var div = document.createElement("div");
div.setAttribute("id", _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("id", _Date)
d.setAttribute("value", "移除")
div.appendChild(d)
document.getElementById("_container").appendChild(div);
test(_Date,_DIV);
}
</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>
<script type="text/javascript">
function test(_Date,_DIV)
{
document.getElementById(_Date).onclick = function()
{
var obj = document.getElementById(_DIV);
obj.parentNode.removeChild(obj);
}
}
</script>
</body>
</html>
CS文件：
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
public partial class Image : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
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("Image/") + fileName);
}
}
strStatus.Text = strMsg.ToString();
}
catch (System.Exception Ex)
{
strStatus.Text = Ex.Message;
}
}
}
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