60 lines
2.3 KiB
C#
60 lines
2.3 KiB
C#
|
// ==++==
|
||
|
|
//
|
||
|
|
// Copyright (c) Microsoft Corporation. All rights reserved.
|
||
|
|
//
|
||
|
|
// ==--==
|
||
|
|
/*============================================================
|
||
|
|
**
|
||
|
|
** Enum: FileMode
|
||
|
|
**
|
||
|
|
**
|
||
|
|
** Purpose: Enum describing whether to create a new file or
|
||
|
|
** open an existing one.
|
||
|
|
**
|
||
|
|
** Date: February 18, 2000
|
||
|
|
**
|
||
|
|
===========================================================*/
|
||
|
|
|
||
|
|
using System;
|
||
|
|
|
||
|
|
namespace System.IO {
|
||
|
|
// Contains constants for specifying how the OS should open a file.
|
||
|
|
// These will control whether you overwrite a file, open an existing
|
||
|
|
// file, or some combination thereof.
|
||
|
|
//
|
||
|
|
// To append to a file, use Append (which maps to OpenOrCreate then we seek
|
||
|
|
// to the end of the file). To truncate a file or create it if it doesn't
|
||
|
|
// exist, use Create.
|
||
|
|
//
|
||
|
|
//| <include file='doc\FileMode.uex' path='docs/doc[@for="FileMode"]/*' />
|
||
|
|
public enum FileMode
|
||
|
|
{
|
||
|
|
// Creates a new file. An exception is raised if the file already exists.
|
||
|
|
//| <include file='doc\FileMode.uex' path='docs/doc[@for="FileMode.CreateNew"]/*' />
|
||
|
|
CreateNew = 1,
|
||
|
|
|
||
|
|
// Creates a new file. If the file already exists, it is overwritten.
|
||
|
|
//| <include file='doc\FileMode.uex' path='docs/doc[@for="FileMode.Create"]/*' />
|
||
|
|
Create = 2,
|
||
|
|
|
||
|
|
// Opens an existing file. An exception is raised if the file does not exist.
|
||
|
|
//| <include file='doc\FileMode.uex' path='docs/doc[@for="FileMode.Open"]/*' />
|
||
|
|
Open = 3,
|
||
|
|
|
||
|
|
// Opens the file if it exists. Otherwise, creates a new file.
|
||
|
|
//| <include file='doc\FileMode.uex' path='docs/doc[@for="FileMode.OpenOrCreate"]/*' />
|
||
|
|
OpenOrCreate = 4,
|
||
|
|
|
||
|
|
// Opens an existing file. Once opened, the file is truncated so that its
|
||
|
|
// size is zero bytes. The calling process must open the file with at least
|
||
|
|
// WRITE access. An exception is raised if the file does not exist.
|
||
|
|
//| <include file='doc\FileMode.uex' path='docs/doc[@for="FileMode.Truncate"]/*' />
|
||
|
|
Truncate = 5,
|
||
|
|
|
||
|
|
// Opens the file if it exists and seeks to the end. Otherwise,
|
||
|
|
// creates a new file.
|
||
|
|
//| <include file='doc\FileMode.uex' path='docs/doc[@for="FileMode.Append"]/*' />
|
||
|
|
Append = 6,
|
||
|
|
}
|
||
|
|
}
|