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Environment.WorkingSet Property

Gets the amount of physical memory mapped to the process context.

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

public static long WorkingSet { get; }

Property Value

Type: System.Int64
A 64-bit signed integer containing the number of bytes of physical memory mapped to the process context.

The WorkingSet property returns a value that is retrieved through an unmanaged helper library. For more information, see the GetProcessMemoryInfo function and the PROCESS_MEMORY_COUNTERS structure.

Windows 98, Windows Millennium Edition Platform Note: This property always returns zero.

The following example displays the size of the working set of the computer that runs the code example.

// Sample for the Environment.WorkingSet property
using System;

class Sample 
    public static void Main() 
    Console.WriteLine("WorkingSet: {0}", Environment.WorkingSet);
This example produces the following results:

WorkingSet: 5038080

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, 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.