title: PostSharp NotifyPropertyChanged Model - PropertyChangedEventHandler
body: <p>I have litle problem with PostSharp Implementation of <code>INotifyPropertyChanged</code>. PostSharp added <code>PropertyChangedEventHandler</code> <code>PropertyChanged</code> after compile time, but I need react from C# too.</p>
  
  <pre><code>Model a = new Model();
  a.PropertyChanged += a_PropertyChanged;
  </code></pre>
  
  <p>Model implementation;</p>
  
  <pre><code>[NotifyPropertyChanged]
  internal class Model
  {
      public string A { get; set; }
  
      public string B { get; set; }
  
      public string C { get { return string.Format("{0} - {1}", A, B); } }
  }
  </code></pre>
  
  <p>I tried different ways to add handler,but unsuccessfully. Is there some way to do this?</p>