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Diffstat (limited to 'src/mscorlib/src/System/IO/FileMode.cs')
-rw-r--r-- | src/mscorlib/src/System/IO/FileMode.cs | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/IO/FileMode.cs b/src/mscorlib/src/System/IO/FileMode.cs new file mode 100644 index 0000000000..a3d083a362 --- /dev/null +++ b/src/mscorlib/src/System/IO/FileMode.cs @@ -0,0 +1,53 @@ +// Copyright (c) Microsoft. All rights reserved. +// Licensed under the MIT license. See LICENSE file in the project root for full license information. + +/*============================================================ +** +** Enum: FileMode +** +** +** +** +** Purpose: Enum describing whether to create a new file or +** open an existing one. +** +** +===========================================================*/ + +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. + // + [Serializable] +[System.Runtime.InteropServices.ComVisible(true)] + public enum FileMode + { + // Creates a new file. An exception is raised if the file already exists. + CreateNew = 1, + + // Creates a new file. If the file already exists, it is overwritten. + Create = 2, + + // Opens an existing file. An exception is raised if the file does not exist. + Open = 3, + + // Opens the file if it exists. Otherwise, creates a new file. + 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. + Truncate = 5, + + // Opens the file if it exists and seeks to the end. Otherwise, + // creates a new file. + Append = 6, + } +} |