private void detach_Ads(Ad entity)
 {
     this.SendPropertyChanging();
     entity.AdProduct = null;
 }
 private void attach_Ads(Ad entity)
 {
     this.SendPropertyChanging();
     entity.AdProduct = this;
 }
 partial void UpdateAd(Ad instance);
 partial void DeleteAd(Ad instance);
 partial void InsertAd(Ad instance);