FileAccess FileAccess FileAccess FileAccess Enum

Definition

Namespace:
System.IO System.IO System.IO System.IO
Assemblies:
System.IO.FileSystem.Primitives.dll, mscorlib.dll, netstandard.dll, System.Runtime.dll

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.

public enum class FileAccess
[System.Flags]
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public enum FileAccess
type FileAccess = 
Public Enum FileAccess
Inheritance
ObjectObjectObjectObject
ValueTypeValueTypeValueTypeValueType
EnumEnumEnumEnum
FileAccessFileAccessFileAccessFileAccess
Attributes
FlagsAttribute ComVisibleAttribute SerializableAttribute

Fields

Read Read Read Read 1

Read access to the file. Data can be read from the file. Combine with Write for read/write access.
ReadWrite ReadWrite ReadWrite ReadWrite 3

Read and write access to the file. Data can be written to and read from the file.
Write Write Write Write 2

Write access to the file. Data can be written to the file. Combine with Read for read/write access.

Examples

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

FileStream^ s2 = gcnew FileStream( name, FileMode::Open, FileAccess::Read, FileShare::Read );

FileStream s2 = new FileStream(name, FileMode.Open, FileAccess.Read, FileShare.Read);

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

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.

Applies to

See also