private void detach_RSVPs(RSVP entity)
 {
     this.SendPropertyChanging();
     entity.Dinner = null;
 }
 private void attach_RSVPs(RSVP entity)
 {
     this.SendPropertyChanging();
     entity.Dinner = this;
 }
 partial void UpdateRSVP(RSVP instance);
 partial void DeleteRSVP(RSVP instance);
 partial void InsertRSVP(RSVP instance);