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Microsoft® Scripting Library - FileSystemObject
Introduction to the FileSystemObject
and the
Scripting Run-Time Library Reference

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The FileSystemObject (FSO) object model allows you to use the familiar object.method syntax with a rich set of properties, methods, and events to process folders and files.

Use this object-based tool with:

Because use of the FSO on the client side raises serious security issues about providing potentially unwelcome access to a client's local file system, this documentation assumes use of the FSO object model to create scripts executed by Internet Web pages on the server side. Since the server side is used, the Internet Explorer default security settings do not allow client-side use of the FileSystemObject object. Overriding those defaults could subject a local computer to unwelcome access to the file system, which could result in total destruction of the file system's integrity, causing loss of data, or worse.

The FSO object model gives your server-side applications the ability to create, alter, move, and delete folders, or to detect if particular folders exist, and if so, where. You can also find out information about folders, such as their names, the date they were created or last modified, and so forth.

The FSO object model also makes it easy to process files. When processing files, the primary goal is to store data in a space- and resource-efficient, easy-to-access format. You need to be able to create files, insert and change the data, and output (read) the data. Since storing data in a database, such as Access or SQL Server, adds a significant amount of overhead to your application, storing your data in a binary or text file may be the most efficient solution. You may prefer not to have this overhead, or your data access requirements may not require all the extra features associated with a full-featured database.

The FSO object model, which is contained in the Scripting type library (Scrrun.dll), supports text file creation and manipulation through the TextStream object. Although it does not yet support the creation or manipulation of binary files, future support of binary files is planned.


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