//商品种类表
        private void buttonAddCommodity_Click(object sender, EventArgs e)
        {
            FormAddCommodity fac = new FormAddCommodity(this);

            fac.Show();
        }
 //商品种类表
 private void buttonAddCommodity_Click(object sender, EventArgs e)
 {
     FormAddCommodity fac = new FormAddCommodity(this);
     fac.Show(); 
 }