private void detach_Commerces(Commerces entity)
		{
			this.SendPropertyChanging();
			entity.Category = null;
		}
		private void attach_Commerces(Commerces entity)
		{
			this.SendPropertyChanging();
			entity.Category = this;
		}
 partial void UpdateCommerces(Commerces instance);
 partial void DeleteCommerces(Commerces instance);
 partial void InsertCommerces(Commerces instance);