private void button1_Click(object sender, EventArgs e)
{
CashSuper csuper = CashFactory.createCashAccept(comboBox1.SelectedItem.ToString());
double totalPrice = 0d;
totalPrice = csuper.acceptCash(Convert.ToDouble(txtPrice.Text) * Convert.ToDouble(txtNum.Text));
total = total + totalPrice;
lbxInfo.Items.Add("单价：" + txtPrice.Text + " 数量：" + txtNum.Text + " 合计：" + totalPrice);
lblTotal.Text = total.ToString();
}
public double GetResult(double money)
{
return(cs.acceptCash(money));
}