partial void DeleteNha(Nha instance);
 partial void UpdateNha(Nha instance);
		private void detach_Nhas(Nha entity)
		{
			this.SendPropertyChanging();
			entity.TinBai = null;
		}
 partial void InsertNha(Nha instance);
		private void attach_Nhas(Nha entity)
		{
			this.SendPropertyChanging();
			entity.TinBai = this;
		}