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VBScript in a Nutshell, 2nd Edition by Ron Petrusha, Matt Childs, Paul Lomax

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Name

FileSystemObject.OpenTextFile Method

Syntax

                  oFileSysObj
                  .OpenTextFile(FileName[, IOMode[, Create[, Format]]])
oFileSysObj

Use: Required

Data Type: FileSystemObject object

A FileSystemObject object.

FileName

Use: Required

Data Type: String

The path and filename of the file to open.

IOMode

Use: Optional

Data Type: Long

A constant specifying the purpose for opening the file.

Create

Use: Optional

Data Type: Boolean

A Boolean flag denoting whether the file should be created if it can’t be found in the given path.

Format

Use: Optional

Data Type: Long

A constant specifying ASCII or Unicode format.

Return Value

A TextStream object.

Description

Opens (and optionally first creates) a text file for reading or writing.

Rules at a Glance

  • File open (IOMode) values are:

Constant

Value

Description

ForAppending

8

Opens the file for appending; that is, the current contents of the file are protected and new data written to the file is placed at the end of the file.

ForReading

1

Opens the file for reading; ForReading files are read-only.

ForWriting

2

Opens the file for writing; all previous file content is overwritten by new data.

  • Tristate (Format) values are:

Constant

Value

Description

TristateUseDefault

-2

Opens as System default

TristateTrue

-1

Opens as Unicode

TristateFalse

0

Opens as ASCII

  • The path element of FileName can be relative or absolute.

  • The default IOMode setting is ForReading (1).

  • The default Format setting is ASCII (False).

  • If another process has opened the file, the method fails with a “Permission Denied” error.

Programming ...

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