Environment.SystemPageSize Property (System)

SystemPageSize Property

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This page is specific to

Microsoft Visual Studio 2010/.NET Framework 4

Other versions are also available for the following:

.NET Framework Class Library

Environment..::.SystemPageSize Property

Gets the amount of memory for an operating system's page file.

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

Syntax

Visual Basic

Public Shared ReadOnly Property SystemPageSize As Integer

public static int SystemPageSize { get; }

Visual C++

public:
static property int SystemPageSize {
    int get ();
}

static member SystemPageSize : int

Property Value

Type: System..::.Int32
The number of bytes in a system page file.

Remarks

This information can be useful when determining whether to use the MemoryMappedFileOptions..::.DelayAllocatePages option when you work with memory-mapped files.

In Windows, this value is the dwPageSize member in the SYSTEM_INFO structure.

Version Information

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

.NET Framework Security

EnvironmentPermission
for access to system and user environment variables. Associated exception:
SecurityException..::.PermissionState

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

Environment Class

System Namespace

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Annotations

Doesn't work on 64 bit systems

just.a.nerd ... Thomas Lee | Edit | Show History

Since this is an Int32 value, it returns 0 (zero) on 64 bit systems.

Actually odd why this property is added to .net 4, just when it's outdated (systems become 64 bit)

[tfl] The above is incorrect. The page size is 4096 bytes, which fits well into a 32-bit integer and works on a 64-bit system.

Here is sample from my workstation:

PSH [C:\foo]: [system.environment]::SystemPageSize
4096