input: [Category] Concurrency Management [Description] The solution demonstrates IDesign CallbackThreadAffinityBehavior - a custom endpoint behavior attribute that makes all callback instances (regardless of the worker threads used for the callbacks) execute on the same thread. The attribute uses IDesign custom .NET 2.0 synchronization context that always marshals the calls to the same thread. This is instrumental is advanced cases such as thread local storage and COM interop as well as advanced synchronization needs. [Last Updated] 2/24/2007 [Title] 
output: Callbacks thread Affinity Attribute