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UnverifiableCodeAttribute Class

Marks modules containing unverifiable code. This class cannot be inherited.

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

[AttributeUsageAttribute(AttributeTargets.Module, AllowMultiple = true, Inherited = false)]
public sealed class UnverifiableCodeAttribute : Attribute

This custom attribute is only for use by compilers and not intended to be used directly by application developers.

Modules containing unverifiable code should be marked with this attribute. This attribute carries no internal state. Its presence in the module metadata indicates that the module contains unverifiable code.


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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

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