FileInfo.Open Method (FileMode, FileAccess, FileShare)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Opens a file in the specified mode with read, write, or read/write access and the specified sharing option.

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

Syntax

Public Function Open ( _
    mode As FileMode, _
    access As FileAccess, _
    share As FileShare _
) As FileStream
public FileStream Open(
    FileMode mode,
    FileAccess access,
    FileShare share
)

Parameters

Return Value

Type: System.IO..::.FileStream
A FileStream object opened with the specified mode, access, and sharing options.

Exceptions

Exception Condition
SecurityException

The caller does not have the required permission.

ArgumentException

path is empty or contains only white spaces.

FileNotFoundException

The file is not found.

ArgumentNullException

One or more arguments is nullNothingnullptra null reference (Nothing in Visual Basic).

UnauthorizedAccessException

path is read-only or is a directory.

DirectoryNotFoundException

The specified path is invalid, such as being on an unmapped drive.

IOException

The file is already open.

Remarks

Version Notes

Windows Phone

This member has a SecurityCriticalAttribute attribute. This attribute restricts this member to internal use. Application code that uses this member throws a MethodAccessException.

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Platforms

Windows Phone

See Also

Reference

FileInfo Class

Open Overload

System.IO Namespace