C#如何连续向Label Box添加值,以便生成的数字继续添加到它？

Question

我正在制作一个骰子滚动程序,我们假设有一个"总赚钱"标签框,显示滚轮掷骰子时所赚取的总金额.如果你滚动6你赚600美元,如果你赚5美元你赚500美元等等我可以得到美元价值出现在标签框上但是当我继续滚动时,这个数字将被替换为下一个值而不是总结为例如滚动5然后你赚500美元然后再次滚动你滚1然后它应该显示$ 600 = 500 + 100.

请帮助我使用代码

 private void button1_Click(object sender, EventArgs e)
 {
     int roll1;

     Random rand = new Random();

     roll1 = rand.Next(6) + 1;
     int value = 100;


     int sum = (roll1 * value);
     totalmoneyLabel.Text = sum.ToString("c");




     if (roll1 == 1)
     {   
         diceBox1.Image = drios1_Project2.Properties.Resources._1Die;
     }

     if (roll1 == 2)
     {
         diceBox1.Image = drios1_Project2.Properties.Resources._2Die;
     }

     if (roll1 == 3)
     {
         diceBox1.Image = drios1_Project2.Properties.Resources._3Die;
     }

     if (roll1 == 4)
     {
         diceBox1.Image = drios1_Project2.Properties.Resources._4Die;
     }

     if (roll1 == 5)
     {
         diceBox1.Image = drios1_Project2.Properties.Resources._5Die;
     }

     if (roll1 == 6)
     {
         diceBox1.Image = drios1_Project2.Properties.Resources._6Die;
     }
}

Answer 1

代替

int sum = (roll1 * value);

和

  sum = sum + (roll1 * value);