InternalsVisibleToAttribute Class (System.Runtime.CompilerServices)

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Microsoft Visual Studio 2005/.NET Framework 2.0

Other versions are also available for the following:

.NET Framework Class Library

InternalsVisibleToAttribute Class

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

Specifies that all nonpublic types in an assembly are visible to another assembly. This class cannot be inherited.

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

Syntax

Visual Basic (Declaration)

<AttributeUsageAttribute(AttributeTargets.Assembly, AllowMultiple:=True, Inherited:=False)> _
Public NotInheritable Class InternalsVisibleToAttribute
    Inherits Attribute

Visual Basic (Usage)

Dim instance As InternalsVisibleToAttribute

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

C++

[AttributeUsageAttribute(AttributeTargets::Assembly, AllowMultiple=true, Inherited=false)] 
public ref class InternalsVisibleToAttribute sealed : public Attribute

/** @attribute AttributeUsageAttribute(AttributeTargets.Assembly, AllowMultiple=true, Inherited=false) */ 
public final class InternalsVisibleToAttribute extends Attribute

JScript

AttributeUsageAttribute(AttributeTargets.Assembly, AllowMultiple=true, Inherited=false) 
public final class InternalsVisibleToAttribute extends Attribute

Remarks

Note
In the .NET Framework version 2.0, Visual Basic does not support the use of this attribute.

Apply this attribute at the assembly level to specify that all nonpublic types in that assembly are visible to another assembly. For more information, see Friend Assemblies (C# Programming Guide) or Friend Assemblies. To apply this attribute to a strong-named assembly, you must know the hexadecimal string that represents the public key of the friend assembly.

Example

The following code example makes nonpublic types in the declaring assembly visible to AssemblyB, to all versions of AssemblyB, and to all variants of AssemblyB that might contain different cultures.

[assembly:InternalsVisibleToAttribute("AssemblyB, PublicKey=32ab4ba45e0a69a1")]

Inheritance Hierarchy

System.Object
System.Attribute
System.Runtime.CompilerServices.InternalsVisibleToAttribute

Thread Safety

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

Platforms

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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.

Version Information

.NET Framework

Supported in: 2.0

.NET Compact Framework

Supported in: 2.0

Reference

InternalsVisibleToAttribute Members
System.Runtime.CompilerServices Namespace