IExtension<T> Interface
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Enables an object to extend another object through aggregation.
Assembly: System.ServiceModel (in System.ServiceModel.dll)
The IExtension<T> type exposes the following members.
| Name | Description | |
|---|---|---|
 | Attach | Enables an extension object to find out when it has been aggregated. Called when the extension is added to the IExtensibleObject<T>::Extensions property. |
| Detach | Enables an object to find out when it is no longer aggregated. Called when an extension is removed from the IExtensibleObject<T>::Extensions property. |
Windows Phone allows you to extend System.ServiceModel::IExtensibleObject<T> objects (the System.ServiceModel::IContextChannel class) by adding a new state or behavior by using its extensible object pattern. The extensible object pattern is used in Windows Phone to either extend existing run-time classes with new functionality or to add new state features to an object.
Capabilities
If you use this API in your app, you must specify the following capabilities in the app manifest. Otherwise, your app might not work correctly or it might exit unexpectedly.
ID_CAP_NETWORKING | Windows Phone 8, Windows Phone OS 7.1 |
For more info, see App capabilities and hardware requirements for Windows Phone 8.