IExtension<T> Interface

Enables an object to extend another object through aggregation.

Namespace:  System.ServiceModel
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

public interface IExtension<T>
where T : Object, IExtensibleObject<T>

Type Parameters

T

The object that participates in the custom behavior.

The IExtension<T> type exposes the following members.

  NameDescription
Public methodSupported by Portable Class LibraryAttachEnables an extension object to find out when it has been aggregated. Called when the extension is added to the IExtensibleObject<T>.Extensions property.
Public methodSupported by Portable Class LibraryDetachEnables an object to find out when it is no longer aggregated. Called when an extension is removed from the IExtensibleObject<T>.Extensions property.
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WCF allows you to extend System.ServiceModel.IExtensibleObject<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.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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