FileAccess Enumeration

.NET Framework (current version)

Defines constants for read, write, or read/write access to a file.

This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.

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

Syntax

<SerializableAttribute>
<FlagsAttribute>
<ComVisibleAttribute(True)>
Public Enumeration FileAccess

Members

	Member name	Description
	Read	Read access to the file. Data can be read from the file. Combine with Write for read/write access.
	ReadWrite	Read and write access to the file. Data can be written to and read from the file.
	Write	Write access to the file. Data can be written to the file. Combine with Read for read/write access.

Remarks

For an example of creating a file and writing text to a file, see How to: Write Text to a File. For an example of reading text from a file, see How to: Read Text from a File. For an example of reading from and writing to a binary file, see How to: Read and Write to a Newly Created Data File.

A FileAccess parameter is specified in many of the constructors for File, FileInfo, FileStream, and other constructors where it is important to control the kind of access users have to a file.

Examples

The following FileStream constructor grants read-only access to an existing file (FileAccess.Read).

C++

Dim s2 As New FileStream(name, FileMode.Open, FileAccess.Read, FileShare.Read)

Version Information

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0