System.IO.MemoryMappedFiles.MemoryMappedFile.CreateViewStream Method

Creates a stream that maps to a view of the memory-mapped file, and that has the specified offset, size, and access type.

Syntax

public MemoryMappedViewStream CreateViewStream (long offset, long size, MemoryMappedFileAccess access)

Parameters

offset
The byte at which to start the view.
size
The size of the view. Specify 0 (zero) to create a view that starts at offset and ends approximately at the end of the memory-mapped file.
access
One of the enumeration values that specifies the type of access allowed to the memory-mapped file. The default is MemoryMappedFileAccess.ReadWrite.

Returns

A stream of memory that has the specified characteristics.

Remarks

You can use the stream returned by this method for sequential access to a memory-mapped file, such as for inter-process communications.

To create a complete view of the memory-mapped file, specify 0 (zero) for the size parameter. If you do this, the size of the view might be smaller or larger than the size of the source file on disk. This is because views are provided in units of system pages, and the size of the view is rounded up to the next system page size.

Requirements

Namespace: System.IO.MemoryMappedFiles
Assembly: System.Core (in System.Core.dll)
Assembly Versions: 4.0.0.0