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GCCollectionMode Enumeration

Specifies the behavior for a forced garbage collection.

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

'Declaration
<SerializableAttribute> _
Public Enumeration GCCollectionMode

Member nameDescription
Supported by Portable Class LibrarySupported in .NET for Windows Store appsDefaultThe default setting for this enumeration, which is currently Forced.
Supported by Portable Class LibrarySupported in .NET for Windows Store appsForcedForces the garbage collection to occur immediately.
Supported by Portable Class LibrarySupported in .NET for Windows Store appsOptimizedAllows the garbage collector to determine whether the current time is optimal to reclaim objects.

Use the GC.Collect method overload to specify the GCCollectionMode value.

The following example forces a garbage collection for generation 2 objects with the Optimized setting.

Imports System

Class Program

    Public Shared Sub Main()
        GC.Collect(2, GCCollectionMode.Optimized)
    End Sub 
End Class

.NET Framework

Supported in: 4.5, 4, 3.5 SP1, 3.0 SP1, 2.0 SP1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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