ASP Tutorials - Herong's Tutorial Examples
Dr. Herong Yang, Version 5.00

"File" Class - File Folder

This section provides a tutorial example on how to use the File class that represents a file of a file system. File class is provided in the Scripting Runtime DLL, scrrun.dll.

File: A class representing a file in a file system. It offers the following properties and methods:

  • "Attributes": Property to return the attributes of the file.
  • "DateCreated": Property to return the date and time when the file was created.
  • "DateLastAccessed": Property to return the date and time when the file was last accessed.
  • "DateLastModified": Property to return the date and time when the file was last modified.
  • "Drive": Property to return the driver letter of the file.
  • "Name": Property to return the name of the file.
  • "ParentFolder": Property to return the "Folder" object of the parent folder.
  • "Path": Property to return the path string of the file.
  • "ShortName": Property to return the name of the file in 8.3 format.
  • "ShortPath": Property to return the path string of the file in 8.3 format.
  • "Size": Property to return the size of the file in bytes.
  • "Copy(destination[,true|false])": Method to copy the file to the specified destination. The optional argument [true|false] specifies that the copy operation will override the existing file.
  • "Delete([true|false])": Method to delete the file. The optional [true|false] argument specifies that the delete operation will delete the read-only file.
  • "Move(destination)": Method to move the file to the specified destination.
  • "OpenAsTextStream([io_mode[,tristate]])": Method to open the file and return a TextStream object representing the I/O stream to that file. io_mode(=1|2|8: ForReading|ForWriting|ForAppending) specifies how the file should be openned. tristate(=-2|-1|0: TristateUserDefault|TristateTrue|TristateFalse) specifies if the file should be open as Unicode or not.

Here is a sample ASP page to show you how to get detailed information about a file.

<script language="vbscript" runat="server">
'  folder_test.asp
'  Copyright (c) 1999 by Dr. Herong Yang
'  This program shows how to browse the directory tree of a drive.
'
   response.write("<html><body>")
   response.write("<b>Tests on the File class</b>:<br/>")
   ' Creating a FileSystemObject object
   set fs = CreateObject("Scripting.FileSystemObject")
   set f = fs.GetFile("c:\winnt\system32\scrrun.dll")
   ' Display detailed information about this file
   response.write("Path = " & f.Path & "<br/>")
   response.write("Name = " & f.Name & "<br/>")
   response.write("Short Name = " & f.ShortName & "<br/>")
   response.write("Short Path = " & f.ShortPath & "<br/>")
   response.write("Drive = " & f.Drive & "<br/>")
   response.write("Size = " & f.Size & "<br/>")
   response.write("Attributes = " & f.Attributes & "<br/>")
   response.write("Date Created = " & f.DateCreated & "<br/>")
   response.write("</body></html>")
</script>

Output:

Tests on the File class:
Path = C:\WINNT\system32\scrrun.dll
Name = scrrun.dll
Short Name = scrrun.dll
Short Path = C:\winnt\system32\scrrun.dll
Drive = c:
Size = 147512
Attributes = 32
Date created = 6/26/2001 6:06:58 PM

Last update: 2002.

Table of Contents

 About This Book

 ASP (Active Server Pages) Introduction

 IIS (Internet Information Services) 5.0

 MS Script Debugger

 VBScript Language

 ASP Built-in Run-time Objects

 ASP Session

 Creating and Managing Cookies

 Managing Sessions with and without Cookies

scrrun.dll - Scripting Runtime DLL

 What Is scrrun.dll?

 "Dictionary" Class - Collection of Key-Value Pairs

 "FileSystemObject" Class - File System

 "Drive" Class - Disk Drive

 "Folder" Class - File Folder

"File" Class - File Folder

 "TextStream" Class - Input or Output Stream

 Managing Response Header Lines

 Calculation Speed and Response Time

 ADO (ActiveX Data Object) DLL

 Working with MS Access Database

 Guest Book Application Example

 References

 PDF Printing Version

Dr. Herong Yang, updated in 2010
"File" Class - File Folder