asp.net

url= HttpContext.Current.Request.Url.Host;

 switch (url)
        {
            case "www.":
                qianZhui = "上海";
                    break;
            case "www.qingpu.":
                    qianZhui = "青浦";
                    break;
            case "www.songjiang.":
                    qianZhui = "松江";
                    break;
            case "www.changning.":
                    qianZhui = "长宁";
                    break;


            case "www.baoshan.":
                    qianZhui = "宝山";
                    break;
            case "www.fengxian.":
                    qianZhui = "奉贤";
                    break;
            case "www.hongkou.":
                    qianZhui = "虹口";
                    break;
            case "www.huangpu.":
                    qianZhui = "黄埔";
                    break;
            case "www.jiading.":
                    qianZhui = "嘉定";
                    break;
            case "www.jinshan.":
                    qianZhui = "金山";
                    break;
            case "www.jingan.":
                    qianZhui = "静安";
                    break;
            case "www.luwan.":
                    qianZhui = "卢湾";
                    break;
            case "www.minhang.":
                    qianZhui = "闵行";
                    break;
            case "www.nanhui.":
                    qianZhui = "南汇";
                    break;
            case "www.pudong.":
                    qianZhui = "浦东";
                    break;
            case "www.putuo.":
                    qianZhui = "普陀";
                    break;
            case "www.xuhui.":
                    qianZhui = "徐汇";
                    break;
            case "www.yagnpu.":
                    qianZhui = "杨浦";
                    break;
            case "www.zhabei.":
                    qianZhui = "闸北";
                    break;


            default:
                    qianZhui = "上海";
                    break;

        }