Event Aggregator Implementation Sample / Best Practices

Question

I'm looking for samples / best practices of Event Aggregator implementation.

Anyone help ?

Answer 1

The best sample of an Event Aggregator would probably be the one from Prism. This was designed by the Patterns and Practices team as part of the Composite WPF and Silverlight Guidance.

Answer 2

Braindump on the Event Aggregator Pattern

Answer 3

Good references i found:
http://weblogs.asp.net/rashid/archive/2009/03/05/use-event-aggregator-to-make-your-application-more-extensible.aspx

http://codebetter.com/blogs/jeremy.miller/archive/2009/07/23/how-i-m-using-the-event-aggregator-pattern-in-storyteller.aspx

http://www.jeremydmiller.com/ppatterns/EventAggregator.ashx

Answer 4

there's a nice one in the MVVM Light toolkit by Laurent Bugnion. Here's the interface

public interface IMessenger
{
    void Register<TMessage>(object recipient, Action<TMessage> action);
    void Register<TMessage>(object recipient, bool receiveDerivedMessagesToo, Action<TMessage> action);
    void Send<TMessage>(TMessage message);
    void Send<TMessage, TTarget>(TMessage message);
    void Unregister(object recipient);
    void Unregister<TMessage>(object recipient);
    void Unregister<TMessage>(object recipient, Action<TMessage> action);
}