[georgos]

تفضل اخي

PHP كود :

decimal a = price - d;
                decimal b = q * a;
                decimal c = b * taxlevel;
                decimal taxx = c;
                if (taxlevel == 0.25m)
                {
                    txtTax.Text = Convert.ToString(c);
                    txtTotal.Text = Convert.ToString( q * a + c);


                } else
                {
                    txtTax.Text = "0";
                    txtTotal.Text = Convert.ToString(q * a + c);
                }