Pete Does Stuff .NET

Creating a modular application using Prism V2 – Screencast 3/4 : Implementing views and services

Step 5 – Creating the ViewModel

• View model contains all the bindable elements that will appear in the view.
• Use a ViewModel to allow easy testing and styling.
• Just a normal class exposing data via properties.
• Use constructor injection to add the ViewModel to the View and set the View’s DataContext to be the ViewModel.
• Add HeaderData property to the ViewModel – if being used in tabs.

Step 6 – Implementing Services
• Create interface for service to allow testing in isolation/swapping of concrete types etc.
• Add service interface to constructor for ViewModel using constructor injection.
• Initialise data using the service interface.
• Add the unity container to the constructor for the module class.
• In the module initialisation code register the Service with the unity container using the following code

• If you want a singleton service use this instead

Creating a modular application using Prism v2 – Screencast 4/4 : Decoupled Communication

This video covered the event aggregator and how to publish/subscribe to loosely coupled events.  Pretty much covered the same stuff as my post on event aggregation.

PeteDoesStuff.NET Prism, WPF Prism, WPF