// Btn giảm theo số tiền, gọi form Discount_Money
private void btnDISCOUNT_MONEY_Click(object sender, EventArgs e)
{
FrmDiscount_Money FRM = new FrmDiscount_Money(totalMoney);
FRM.d += new FrmDiscount_Money.myDEL(setDiscountMoney);
FRM.Show();
}
// Btn giảm theo số tiền, gọi form Discount_Money
private void btnDiscountMoney_Click(object sender, EventArgs e)
{
FrmDiscount_Money frmDiscountMoney = new FrmDiscount_Money(discountMoney);
frmDiscountMoney.d += new FrmDiscount_Money.myDEL(setDiscountMoney);
frmDiscountMoney.Show();
}