如何获取datagridview（windows应用程序）页脚的总行数

问题描述

我无法获得datagridview页脚的行总数



我的桌子是

I couldn't get the sum total of rows at the footer of datagridview

my table is

id    purticulars     debit    credit
1      ammu           200        0
2     chinnu          300        0
3      annie           0        500
4      mittu           0        500

我希望输出为

I want output as

id    purticulars     debit    credit
1      ammu           200        0
2     chinnu          300        0
3      annie           0        500
4      mittu           0        500
-----------------------------------------
       total          500       1000

我尝试了什么：



我试过这个

What I have tried:

I have tried this

for (int m = 1; m < dt.Columns.Count; m++)
                {
                    double sum = 0;
                    for (int j = 0; j < dt.Rows.Count; j++)
                    {
                        sum += Convert.ToDouble(dt.Rows[j][m]);
                        dataGridView1.Rows[dt.Rows.Count].Cells[m + 1].Value = sum.ToString();
                    }

但它显示错误，因为输入字符串格式不正确

But it shows error as input string is not in correct format

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