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.