Returns the contents of a file as a byte array.
' Usage
Dim value As Byte() = My.Computer.FileSystem.ReadAllBytes(file)
' Declaration
Public Function ReadAllBytes( _
ByVal file As String _
) As Byte()
- file
String. File to be read. Required.
Byte array containing the contents of the file.
The following conditions may cause an exception to be thrown:
The ReadAllBytes method of the My.Computer.FileSystem object allows you to read from a binary file. The contents of the file are returned as a byte array.
Do not make decisions about the contents of the file based on the name of the file. For example, the file Form1.vb may not be a Visual Basic source file. Verify all inputs before using the data in your application.
The following table lists examples of tasks involving the My.Computer.FileSystem.ReadAllBytes method.
This example reads from the file C:/Documents and Settings/selfportrait.jpg.
My.Computer.FileSystem.ReadAllBytes _
("C:/Documents and Settings/selfportrait.jpg")
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:
For more information, see Code Access Security and Requesting Permissions.
Reference
Other Resources