Hi All.
Can anybody explain why Windsor will not resolve the component.
using System;
using System.Collections.Generic;
using Castle.Windsor;
using Castle.MicroKernel.Registration;
namespace WindsorIOCProblem
{
class Program
{
static void Main(string[] args)
{
IWindsorContainer container = new WindsorContainer();
container.Register(Component.For<IEventHandler<SomethingCreatedEvent>>().ImplementedBy<CreateSomethingEventHandler>());
var publisher = new Publisher(container);
// This works
var created = new SomethingCreatedEvent();
publisher.Publish(created);
// This does not.
var list = new List<IEvent>() { new
SomethingCreatedEvent() };
foreach (var e in list)
publisher.Publish(e);
}
}
public interface IEvent { }
public class SomethingCreatedEvent : IEvent { }
public interface IEventHandler<T> where T : IEvent
{
void Handle(IEvent @event);
}
public class CreateSomethingEventHandler :
IEventHandler<SomethingCreatedEvent>
{
void IEventHandler<SomethingCreatedEvent>.Handle(IEvent
@event)
{
Console.WriteLine(this.GetType().Name);
}
}
public class Publisher
{
public Publisher(IWindsorContainer container)
{
_container = container;
}
public void Publish<T>(T @event) where T : IEvent
{
var handler = _container.Resolve<IEventHandler<T>>();
handler.Handle(@event);
}
private IWindsorContainer _container;
}
}
In the code example I give (which should run with a reference to
Windsor).
If I call Publisher.Publish with the explicit type Windsor can resolve
the component. However if I use the second method (which is what to
do). Windsor will not resolve the component and throws an exception
telling me it cannot find a service supporting IEvent. I can
understand why Windsor cannot find a service implementing IEvent.
My question is how can I Windsor to resolve correctly?
Thanks
Paul
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