简单操作文件上传实例（文件上传，自动重命名，自动添加文件夹）

最新推荐文章于 2020-12-04 11:23:37 发布

lifuyun

最新推荐文章于 2020-12-04 11:23:37 发布

阅读量1.4k

点赞数

分类专栏： ASP.NET . net 文章标签： image button 存储 string

本文链接：https://blog.youkuaiyun.com/lifuyun/article/details/2414689

版权

ASP.NET 同时被 2 个专栏收录

53 篇文章

订阅专栏

. net

52 篇文章

订阅专栏

本文介绍了一个使用ASPX和C#实现的文件上传功能，包括前端页面设计和后端处理逻辑。具体实现了文件类型的判断、自动生成保存路径、文件重命名及存储等功能。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

前台代码：ASPX

<% @ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Album_Default" %>

<! 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 >

</ head >

< body >

< form id ="form1" runat ="server" >

< div >

< asp:FileUpload ID ="FileUpload1" runat ="server" />

< asp:Button ID ="Button1" runat ="server" OnClick ="Button1_Click" Text ="Button" />< br />

< asp:Image ID ="Image1" runat ="server" Height ="100px" />< br />

< asp:Label ID ="Label1" runat ="server" ></ asp:Label ></ div >

</ form >

</ body >

</ html >

后台代码：CS

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;

public partial class Album_Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

Image1.Visible = false;

}

protected void Button1_Click(object sender, EventArgs e)

{

string filename = FileUpload1.FileName;

string size = FileUpload1.PostedFile.ContentLength.ToString();

string[] myfile = filename.Split('.');

string dotname = myfile[myfile.Length - 1].ToString().ToLower();

string type = FileUpload1.PostedFile.ContentType;

string type2 = filename.Substring(filename.LastIndexOf(".") + 1);

string imgpath = Server.MapPath("~/Upimg") + "//";

string filepath = Server.MapPath("~/Upfile") + "//";

string folder = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString();

if (type2 == "jpg" || type2 == "gif")

{

Image1.Visible = true;

if (!System.IO.Directory.Exists(imgpath + folder))

{//自动生成文件夹

System.IO.Directory.CreateDirectory(imgpath + folder);

}

Random myrdn = new Random();//产生随机数

//日期，时间，随机数和后缀名

string newfilename = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + myrdn.Next(10000).ToString() + "." + dotname;

FileUpload1.SaveAs(imgpath + folder + "//" + newfilename);