01.private void Button_Click(object sender, RoutedEventArgs e)
02.{
03. int income = int.Parse(txt_income.Text);
04. int spend = int.Parse(txt_spend.Text);
05. int price = int.Parse(txt_price.Text);
06. int balance = income - spend;
07. int day = price / balance;
08.
09. txt_save_money.Text = " คุณต้องเก็บเงิน " + balance.ToString() + " บาท จำนวน " + day + " วัน ";
10.
11. if (income < spend)
12. {
13. MessageBox.Show("เงินไม่พอเก็บ");
14. }
15.}
