private void detach_stocks(stock entity)
		{
			this.SendPropertyChanging();
			entity.item = null;
		}
		private void attach_stocks(stock entity)
		{
			this.SendPropertyChanging();
			entity.item = this;
		}
 partial void Deletestock(stock instance);
 partial void Updatestock(stock instance);
 partial void Insertstock(stock instance);
		private void attach_stocks(stock entity)
		{
			this.SendPropertyChanging();
			entity.warehouse = this;
		}