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My.Computer.FileSystem.WriteAllBytes Method 

Writes data to a binary file.


' Usage
My.Computer.FileSystem.WriteAllBytes(file ,data ,append)
' Declaration
Public Sub WriteAllBytes( _
   ByVal file As String, _
   ByVal data As Byte(), _
   ByVal append As Boolean _
)

Parameters

file

String. Path and name of the file to be written to. Required.

data

Byte. Data to be written to the file. Required.

append

Boolean. Whether to append or overwrite data. Default is False. Required.

The following conditions may create an exception:

If the append parameter is True, it appends the data to the file; otherwise data in the file is overwritten.

If the specified path, excluding the file name, is not valid, a DirectoryNotFoundException exception will be thrown. If the path is valid but the file does not exist, the file is created.

The following table lists an example of a task involving the My.Computer.FileSystem.WriteAllBytes method.

To See

Write to a binary file

How to: Write to Binary Files in Visual Basic

This example appends the data array CustomerData to the file CollectedData.

My.Computer.FileSystem.WriteAllBytes _
("C:\MyDocuments\CustomerData", CustomerData, True)

Namespace: Microsoft.VisualBasic.MyServices

Class: FileSystemProxy (provides access to FileSystem)

Assembly: Visual Basic Runtime Library (in Microsoft.VisualBasic.dll)

Availability by Project Type

Project type Available

Windows Application

Yes

Class Library

Yes

Console Application

Yes

Windows Control Library

Yes

Web Control Library

Yes

Windows Service

Yes

Web Site

Yes

The following permission may be necessary:

Permission Description

FileIOPermission

Controls the ability to access files and folders. Associated enumeration: Unrestricted.

For more information, see Code Access Security and Requesting Permissions.

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