Enable an object to participate in custom behavior, such as registering for events, or watching state transitions.
Assemblies: System.ServiceModel (in System.ServiceModel.dll)
System.ServiceModel.Primitives (in System.ServiceModel.Primitives.dll)
Thetype exposes the following members.
Implement to enable aggregation of extensions.
For example, if you are implementing a TreeNode class and want to allow external code to add annotations and methods to some instances of TreeNode, you can have TreeNode implement IExtensibleObject<TreeNode>. This enables code that uses TreeNode to add objects that implement IExtensibleObject<TreeNode> to the Extensions collection.
There are four extensible objects in Windows Communication Foundation (WCF):
For a discussion about how to create extension to work with these objects, see Extensible Objects.
.NET FrameworkSupported in: 4.6, 4, 3.5, 3.0
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
Portable Class LibrarySupported in: Portable Class Library
.NET for Windows Store appsSupported in: Windows 8
Supported in: Windows Phone 8.1
Supported in: Windows Phone Silverlight 8.1
Supported in: Windows Phone Silverlight 8
Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.