protected void gvBarInfo_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)//判定当前的行是否属于datarow类型的行
            {
                //当鼠标放上去的时候 先保存当前行的背景颜色 并给附一颜色
                e.Row.Attributes.Add("onmouseover", "currentcolor=this.style.backgroundColor;this.style.backgroundColor='#7f9edb',this.style.fontWeight='';");
                //当鼠标离开的时候 将背景颜色还原的以前的颜色
                e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=currentcolor,this.style.fontWeight='';");

//根据字段值显示指定内容
                switch (e.Row.Cells[3].Text.ToString())
                {
                    case "1":
                        e.Row.Cells[3].Text = "道闸";
                        break;
                    case "2":
                        e.Row.Cells[3].Text = "入口屏";
                        break;
                    case "3":
                        e.Row.Cells[3].Text = "摄像头";
                        break;
                    case "4":
                        e.Row.Cells[3].Text = "发布牌";
                        break;
                }
                //根据字段值显示指定内容
                switch (e.Row.Cells[7].Text.ToString())
                {
                    case "0":
                        e.Row.Cells[7].Text = "正常";
                        break;
                    case "1":
                        e.Row.Cells[7].Text = "异常";
                        break;
                    case "2":
                        e.Row.Cells[7].Text = "未知";
                        break;
                    default:
                        e.Row.Cells[7].Text = "未知";
                        break;
                }
            }
        }