partial void DeleteEcdinstructor(Ecdinstructor instance);
 partial void InsertEcdinstructor(Ecdinstructor instance);
 partial void UpdateEcdinstructor(Ecdinstructor instance);
 private void detach_Ecdinstructors(Ecdinstructor entity)
 {
     this.SendPropertyChanging("Ecdinstructors");
     entity.Division1 = null;
 }