LZ太强大了
看来我的领悟能力有待提高啊..

数据放到datagridview
// 相同数值出现的次数
int j=0;
            for (int i = 0; i<dataGridView1.Rows.Count - 1; i++)
            {
                int qyg = int.Parse(dataGridView1.Rows[i].Cells[2].Value.ToString());
                int hyg = int.Parse(dataGridView1.Rows[i + 1].Cells[2].Value.ToString());
                j++;
                //前后列数据比较   不同则改变值
                if (qyg != hyg)
                {
                    for (int k = 0; k < j; k++)
                    {
                        if (k == 0)
                            dataGridView1.Rows[i - k].Cells[2].Value = 3;
                        else if (k == j - 1)
                            dataGridView1.Rows[i - k].Cells[2].Value = 1;
                        else
                            dataGridView1.Rows[i - k].Cells[2].Value = 2;

                    }
                    j = 0;
                }
                // 最后一个列没得比较 特殊处理
                if (i == dataGridView1.Rows.Count - 2)
                {
                    dataGridView1.Rows[i +1].Cells[2].Value = 3;
                    for (int k = 0; k < j; k++)
                    {
                         if (k == j - 1)
                            dataGridView1.Rows[i - k].Cells[2].Value = 1;
                        else
                            dataGridView1.Rows[i - k].Cells[2].Value = 2;

                    }
                    j = 0;
                }
            }

新手 请指点

我也服了

I 服 YOU

這裡的高手還真的是多啊!
真的是服了U