FileSystemProxy.ReadAllBytes(String) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Returns the contents of a file as a byte array.
public:
cli::array <System::Byte> ^ ReadAllBytes(System::String ^ file);public byte[] ReadAllBytes (string file);member this.ReadAllBytes : string -> byte[]Public Function ReadAllBytes (file As String) As Byte()Parameters
- file
- String
File to be read.
Returns
Byte array containing the contents of the file.
Exceptions
The path is not valid for one of the following reasons: it is a zero-length string; it contains only white space; it contains invalid characters; or it is a device path (starts with \\.\); it ends with a trailing slash.
file is Nothing.
The file does not exist.
The file is in use by another process, or an I/O error occurs.
The path exceeds the system-defined maximum length.
A file or directory name in the path contains a colon (:) or is in an invalid format.
There is not enough memory to write the string to buffer.
The user lacks necessary permissions to view the path.
Examples
This example reads from the file C:/Documents and Settings/selfportrait.jpg.
My.Computer.FileSystem.ReadAllBytes(
"C:/Documents and Settings/selfportrait.jpg")
Remarks
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.
| To | See |
|---|---|
| Read from a binary file | How to: Read From Binary Files |
