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文件上传实例（文件上传，自动重命名，自动添加文件夹）

2012-08-22 15:49 621 查看

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">

</head>

<body>

<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);

string wpath
= "~//Upimg//"
+ folder
+ "//"
+ newfilename;

Image1.ImageUrl
= wpath;

//FileUpload1.SaveAs(ipath);

Label1.Text
= "原始文件名"
+ filename
+ "<br>存储文件名："
+ newfilename
+ "<br>文件大小"
+ size
+ "<br>文件类型"
+ type2
+ "<br>文件后缀"
+ type
+ "<br>文件虚拟路径"
+ wpath;

}

else

{

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

{//自动生成文件夹

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

}

Random myrdn
= new Random();//产生随机数

//日期，时间，随机数和后缀名

Image1.Visible
= false;

string wpath
= "Upfile//"
+ folder
+ newfilename;

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

}

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