EventPublication and EventSubscription not working.

I'm having trouble getting EventPublication and EventSubscription to work.
Things compile but the event goes nowhere.

Here's the essentials of the sample application which is simply sending a
string to be passed to the Debug.WriteLine function. I've typed this in from
memory so there could be a typo or two in there but the basic logic should
be correct.

The original program was created using the new project -> WPF window
application wizard.

using System.Diagnostics;
using Microsoft.Practices.CompositUI.EventBroker;
using Microsoft.Practices.CompositUI.Utility;
namespace LoggingExperiment
{
public class Logger
{
[EventSubscription( "TopicTrace", ThreadOption.Publisher )]
public void DoTrace( object sender, DataEventArgs<string> e)
{
Debug.WriteLine( e.Data );
}
}
}

using System;
using Microsoft.Practices.EnterpriseLibrary.Logging;
using Microsoft.Practices.CompositeUI.EventBroker;
using Microsoft.Practices.CompositeUI.Utility;

namespace LoggingExperiemnt
{
public partial class Window1 : System.Windows.Window
{
[EventPublication("TopicTrace", PublicationScope.Global)]
public event EventHandler<DataEventArgs<string>> DoTrace;

public WIndow1()
{
CallTrace(this, "Calling InitializeComponent");
InitializeComponent();
}

public void CallTrace( object sender, string msg )
{
if (DoTrace != null)
{
DoTrace( sender, new DataEventArgs<string>( msg ) );
}
}
}

The code compiles and runs but DoTrace is always null, indicating that the
system never decided that it was necessary to establish the
publish/subscriber relationship. What am I missing?
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Richard Lewis Haggard
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