前台：设置gridview的ShowFooter="True" ，否则默认表头为

隐藏 的！ 

后台代码

RowDataBound事件

private double sum = 0;    protected void GetAccountsOpened10_RowDataBound(object sender, GridViewRowEventArgs e)    {        if (e.Row.RowIndex >= 0)        {            sum += Convert.ToDouble(e.Row.Cells[1].Text);        }        else if (e.Row.RowType == DataControlRowType .Footer)        {            e.Row.Cells[1].Text = "total：" +sum.ToString();               }    }