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authorJiyoung Yun <jy910.yun@samsung.com>2016-11-23 19:09:09 +0900
committerJiyoung Yun <jy910.yun@samsung.com>2016-11-23 19:09:09 +0900
commit4b4aad7217d3292650e77eec2cf4c198ea9c3b4b (patch)
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Imported Upstream version 1.1.0upstream/1.1.0
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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more 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,
+ }
+}