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