protected  override  void  OnPropertyChanged(System.ComponentModel.PropertyChangedEventArgs  e) {

       if  (HeardDirectReportChanged(e)) return ;

       base.OnPropertyChanged(e);

       RaiseManagerPropertyChanged();

     }

     // Note: Don't recommend this approach at all.   

     // PropertyChanged is not raised for every change to an employee. 

     // PropertyChanged not raised when entity changes are rolled back 

     // e.g., after IEditableObject.CancelEdit or RejectChanges 

     // Manager won't hear about any of these events via this mechanism 

     private  bool  HeardDirectReportChanged(PropertyChangedEventArgs  e) {

       var  propertyName = e.PropertyName;

       if  (!propertyName.StartsWith("DirectReport '" )) return  false ;

       // Do something 

       var  x = this.FullName + " heard from " + propertyName;

       return  true ; // assume don't actually want to continue with PropertyChanged 

     }

     private  void  RaiseManagerPropertyChanged() {

       var  mgr = this.Manager;

       var  mgrEa = Manager.EntityAspect;

       var  selfEa = this.EntityAspect;

       // Reasons not to continue 

       if  (this  == mgr ||                      // if manage oneself 

            !selfEa.IsChanged ||                 // self unchanged 

            selfEa.EntityState.IsDetached() ||   // self is detached 

            mgrEa.IsNullEntity ||                // have no manager 

            mgrEa.EntityState.IsDetached()       // manager is detached 

           ) return ;

       mgr.EntityAspect.ForcePropertyChanged(

         new  PropertyChangedEventArgs (

           string .Format("DirectReport '{0}: {1}'" , EmployeeID, FullName)));

     }