改变具有相应值的元素单元格或者行的颜色(GredView)

 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            if (e.Row.Cells[8].Text == "USA")
            {
                //e.Row.BackColor = System.Drawing.Color.Red;
                e.Row.Cells[8].BackColor = System.Drawing.Color.Red;
            }
        }
    }