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FixedAddressValueTypeAttribute Class

Note: This class is new in the .NET Framework version 2.0.

Fixes the address of a static value type field throughout its lifetime. This class cannot be inherited.

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

<SerializableAttribute> _
<AttributeUsageAttribute(AttributeTargets.Field)> _
Public NotInheritable Class FixedAddressValueTypeAttribute
	Inherits Attribute
Dim instance As FixedAddressValueTypeAttribute

/** @attribute SerializableAttribute() */ 
/** @attribute AttributeUsageAttribute(AttributeTargets.Field) */ 
public final class FixedAddressValueTypeAttribute extends Attribute
public final class FixedAddressValueTypeAttribute extends Attribute

Use the FixedAddressValueTypeAttribute attribute to mark static value types as pinned upon creation.

This attribute is used by the Microsoft Visual C++ compiler.

Static value type fields are created as boxed objects. This means that their address can change as garbage collection is performed. When you apply this attribute to a static value type, its address remains constant during its lifetime.

The following code example demonstrates how to apply the FixedAddressValueTypeAttribute attribute to a field.

Imports System.Runtime.CompilerServices

Module Program

    <FixedAddressValueTypeAttribute()> Dim pinnedInteger As Integer

    Sub Main(ByVal args() As String)
        Console.WriteLine("The FixedAddressValueTypeAttribute attribute was applied.")
    End Sub

End Module


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0