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.NET Framework 3.5
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Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:
.NET Framework Class Library
IExtension<(Of <(T>)>) Interface

Enables an object to extend another object through aggregation.

Namespace:  System.ServiceModel
Assembly:  System.ServiceModel (in System.ServiceModel.dll)
Visual Basic (Declaration)
Public Interface IExtension(Of T As {Object, IExtensibleObject(Of T)})
Visual Basic (Usage)
Dim instance As IExtension(Of T)
C#
public interface IExtension<T>
where T : Object, IExtensibleObject<T>
Visual C++
generic<typename T>
where T : Object, IExtensibleObject<T>
public interface class IExtension
JScript
JScript does not support generic types or methods.

Type Parameters

T

The object that participates in the custom behavior.

WCF allows you to extend System.ServiceModel..::.IExtensibleObject<(Of <(T>)>) objects (the System.ServiceModel..::.IContextChannel, System.ServiceModel..::.ServiceHost, System.ServiceModel..::.InstanceContext, and System.ServiceModel..::.OperationContext classes) by adding a new state or behavior by using its extensible object pattern. The extensible object pattern is used in WCF to either extend existing run-time classes with new functionality or to add new state features to an object.

Windows Vista, Windows XP SP2, Windows Server 2003

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
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