GridView Add Statistics FooterRow

  遍历所有行，获取对应行对应列值的统计，此函数写在RowDataBind事件中 

 int mysum1 = 0; 
    int mysum2 = 0;
    protected void GridList_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow )
        {
            DataRowView myrows=(DataRowView)e.Row.DataItem;
            mysum1 +=Convert .ToInt32 (myrows[2].ToString ());
            mysum2 += Convert.ToInt32(myrows[3].ToString());
        }
        // 合计
        if (e.Row.RowType == DataControlRowType.Footer)
        {
            e.Row.Cells[0].Text = "合计";
            e.Row.Cells[1].Text = mysum1.ToString();
            e.Row.Cells[2].Text = mysum2.ToString();
        }
    }