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FileStream Constructor (SafeFileHandle, FileAccess)

FileStream.FileStream(SafeFileHandle, FileAccess) Constructor

Initializes a new instance of the FileStream class for the specified file handle, with the specified read/write permission.

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

public FileStream (
	SafeFileHandle handle,
	FileAccess access
)
public FileStream (
	SafeFileHandle handle, 
	FileAccess access
)
public function FileStream (
	handle : SafeFileHandle, 
	access : FileAccess
)
Not applicable.

Parameters

handle

A file handle for the file that the current FileStream object will encapsulate.

access

A FileAccess constant that sets the CanRead and CanWrite properties of the FileStream object.

Exception typeCondition

ArgumentException

access is not a field of FileAccess.

SecurityException

The caller does not have the required permission.

IOException

An I/O error occurs, such as a disk error.

-or-

The stream has been closed.

UnauthorizedAccessException

The access requested is not permitted by the operating system for the specified file handle, such as when access is Write or ReadWrite and the file handle is set for read-only access.

When Close is called, the handle is also closed and the file's handle count is decremented.

FileStream assumes that it has exclusive control over the handle. Reading, writing, or seeking while a FileStream is also holding a handle could result in data corruption. For data safety, call Flush before using the handle, and avoid calling any methods other than Close after you are done using the handle.

Caution noteCaution:

When you compile a set of characters with a particular cultural setting and retrieve those same characters with a different cultural setting, the characters might not be interpretable, and could cause an exception to be thrown.

FileShare.Read is the default for those FileStream constructors without a FileShare parameter.

For a list of common I/O tasks, see Common I/O Tasks.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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