private void button1_Click(object sender, EventArgs e)
{
if (PKEY == null) return;
DishRepostitory rep = new DishRepostitory();
rep.SaveComment(PKEY, txtCOMMENT.Text);
refresh();
}
private void refresh()
{
DishRepostitory rep = new DishRepostitory();
List<DishDTO> lst = rep.GetDishList(order_id);
grvDISH.DataSource = lst;
}