下面三段代码，如何用循环写出？
private double sum = 0;
private double sum1 = 0;
private double sum2 = 0;
private double sum3 = 0;
private double sum4 = 0;
private double sum5 = 0;
private double sum6 = 0;
private double sum7 = 0;
private double sum8 = 0;
private double sum9 = 0;
----------------------------------------
sum += Convert.ToDouble(e.Row.Cells[2].Text);
sum1 += Convert.ToDouble(e.Row.Cells[3].Text);
sum2 += Convert.ToDouble(e.Row.Cells[4].Text);
sum3 += Convert.ToDouble(e.Row.Cells[5].Text);
sum4 += Convert.ToDouble(e.Row.Cells[6].Text);
sum5 += Convert.ToDouble(e.Row.Cells[7].Text);
sum6 += Convert.ToDouble(e.Row.Cells[8].Text);
sum7 += Convert.ToDouble(e.Row.Cells[9].Text);
sum8 += Convert.ToDouble(e.Row.Cells[10].Text);
sum9 += Convert.ToDouble(e.Row.Cells[11].Text);
---------------------------
e.Row.Cells[0].Text = "合计：";
e.Row.Cells[2].Text = sum.ToString();
e.Row.Cells[3].Text = sum1.ToString();
e.Row.Cells[4].Text = sum2.ToString("f");
e.Row.Cells[5].Text = sum3.ToString("f");
e.Row.Cells[6].Text = sum4.ToString("f");
e.Row.Cells[7].Text = sum5.ToString("f");
e.Row.Cells[8].Text = sum6.ToString("f");
e.Row.Cells[9].Text = sum7.ToString("f");
e.Row.Cells[10].Text = sum8.ToString("f");
e.Row.Cells[11].Text = sum9.ToString("f");
[解决办法]

        const int SUMSIZE=10;
        double[] sums;
        public void Init()
        {
            sums=new double[SUMSIZE];
        } 
 
        public void Fn(e)
        {
            for (int n = 0; n < SUMSIZE; n++)
            {
                sums[n] += Convert.ToDouble(e.Row.Cells[n + 2].Text);
            }
        }
        public void Display()
        {
            for (int n = 0; n < SUMSIZE; n++)
            {
                e.Row.Cells[n + 2].Text = sums[n].ToString();
            }
        }

[解决办法]
变量用数组，这样就能循环了
private double []sum = new double[]{0,0,0,0,0,0,0,0,0,0};

for(int i=0;i<10;i++)
{
sum[i] += Convert.ToDouble(e.Row.Cells[i+2].Text);
}

e.Row.Cells[0].Text = "合计：";
for(int i=0;i<10;i++)
{
e.Row.Cells[i+2].Text = sum[i].ToString();
}