OnRowDataBound="gv_RowDataBound" ShowFooter="True">


protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)

    {


        if (e.Row.RowType == DataControlRowType.DataRow)

        {

            sum1 +=  Convert.ToInt32(e.Row.Cells[1].Text);

            sum2 += Convert.ToInt32(e.Row.Cells[2].Text);

            sum3 += Convert.ToInt32(e.Row.Cells[3].Text);

            sum4 += Convert.ToInt32(e.Row.Cells[4].Text);

            sum5 += Convert.ToInt32(e.Row.Cells[5].Text);

            sum6 += Convert.ToInt32(e.Row.Cells[6].Text);

            sum7 += Convert.ToInt32(e.Row.Cells[7].Text);

        }else        if (e.Row.RowType == DataControlRowType.Footer)

        {   //判断此行是否是页尾，如果是则开始统计数据

            e.Row.Cells[0].Text = "合计";//每一列的数

            e.Row.Cells[1].Text = sum1.ToString();//合计值

            e.Row.Cells[2].Text = sum2.ToString();//合计值

            e.Row.Cells[3].Text = sum3.ToString();//合计值

            e.Row.Cells[4].Text = sum4.ToString();//合计值

            e.Row.Cells[5].Text = sum5.ToString();//合计值

            e.Row.Cells[6].Text = sum6.ToString();//合计值

            e.Row.Cells[7].Text = sum7.ToString();//合计值

      

        }

    }