I created another screencast over the weekend showing how you can integrate Unity with Enterprise Library 4.0:

• Enterprise Library 4.0 Logging Application Block and Unity IoC Screencast

This screencast discusses the Logging Application Block with Unity. The Logging Application Block comes with a LoggingBlockExtension that adds the various configuration information into Unity so you can inject a LogWriter Class into your custom business classes. This is very similar to how the Data Access Application Block works with Unity as I showed in a previous screencast:

• Enterprise Library 4.0 Data Access Application Block ( DAAB ) and Unity IoC Screencast

The screencast walks through a Model-View-Presenter type scenario where you have an AddCustomerPresenter Class with a dependency on an ICustomerDataSource that has a dependency on the LogWriter Class in the Logging Application Block. The screencast shows how to create the UnityContainer, add the appropriate Enterprise Library Unity Extensions, add additional type mappings, etc. The example uses a simple Rolling Flat File TraceListener and shows you the new Midnight Rollover Setting for incremental daily log files.

If you are interested in the Validation Application Block with Unity, you can also check out that previous screencast as well:

• Enterprise Library 4.0 Validation Application Block and Unity IoC Screencast