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File.WriteAllBytes Method

Note: This method is new in the .NET Framework version 2.0.

Creates a new file, writes the specified byte array to the file, and then closes the file. If the target file already exists, it is overwritten.

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)

public static void WriteAllBytes (
	string path,
	byte[] bytes
)
public static void WriteAllBytes (
	String path, 
	byte[] bytes
)
public static function WriteAllBytes (
	path : String, 
	bytes : byte[]
)

Parameters

path

The file to write to.

bytes

The bytes to write to the file.

Exception typeCondition

ArgumentException

path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by InvalidPathChars.

ArgumentNullException

path is a null reference (Nothing in Visual Basic) or the byte array is empty.

PathTooLongException

The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.

DirectoryNotFoundException

The specified path is invalid (for example, it is on an unmapped drive).

IOException

An I/O error occurred while opening the file.

UnauthorizedAccessException

path specified a file that is read-only.

-or-

This operation is not supported on the current platform.

-or-

path specified a directory.

-or-

The caller does not have the required permission.

FileNotFoundException

The file specified in path was not found.

NotSupportedException

path is in an invalid format.

SecurityException

The caller does not have the required permission.

Given a byte array and a file path, this method opens the specified file, writes the contents of the byte array to the file, and then closes the file.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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