aspx 文件上传和下载，多文件上传
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MultiFileUpload.aspx.cs"
Inherits="MultiFileUpload"%>
<!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>孟宪会多文件上传测试</title>
<script type="text/javascript">
function addFile() {
var div = document.createElement("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("onclick", "deteFile(this)");
d.setAttribute("value", "移除")
div.appendChild(d)
document.getElementById("_container").appendChild(div);
}
function deteFile(o) {
while (o.tagName != "DIV") o = o.parentNode;
o.parentNode.removeChild(o);
}
</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:TextBoxID="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:Buttonrunat="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>
</body>
</html>
C#代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
publicpartialclass MultiFileUpload : System.Web.UI.Page
{
protectedvoid 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("images/") + fileName);
}
}
strStatus.Text = strMsg.ToString();
}
catch (System.Exception Ex)
{
strStatus.Text = Ex.Message;
}
}
}
下载
public void Download(string path) //要下载文件的名称
{ 比如string path = "\\images\\a.text";自己检查自己的路径问题，有的需要添加上级目录 有的直接输入文件名就可
if (!string.IsNullOrEmpty(path))
{
string filePath = Server.MapPath("")+path;//路径
// string filePath =@"C:\Users\Public\Pictures\Sample Pictures\1.jpg";
FileInfo fileInfo = new FileInfo(filePath);
Response.Clear();
Response.ClearContent();
Response.ClearHeaders();
Response.AddHeader("Content-Disposition", "attachment;filename=" + fileInfo.Name);
Response.AddHeader("Content-Length", fileInfo.Length.ToString());
Response.AddHeader("Content-Transfer-Encoding", "binary");
Response.ContentType = "application/octet-stream";
Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
Response.WriteFile(fileInfo.FullName);
Response.Flush();
Response.End();
}
}
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