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FixedAddressValueTypeAttribute Class

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 sealed class FixedAddressValueTypeAttribute : Attribute
/** @attribute SerializableAttribute() */ 
/** @attribute AttributeUsageAttribute(AttributeTargets.Field) */ 
public final class FixedAddressValueTypeAttribute extends Attribute
SerializableAttribute 
AttributeUsageAttribute(AttributeTargets.Field) 
public final class FixedAddressValueTypeAttribute extends Attribute
Not applicable.

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.

using System;
using System.Runtime.CompilerServices;


class Program
{
    [FixedAddressValueTypeAttribute()]
    int pinnedInt;
    
    static void Main(string[] args)
    {

        Console.WriteLine("The FixedAddressValueTypeAttribute attribute was applied.");

    }
}

System.Object
   System.Attribute
    System.Runtime.CompilerServices.FixedAddressValueTypeAttribute

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 Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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