label 显示系统时间有关问题

label 显示系统时间问题！在线等
asp.net  获取当前时间label显示 并且时间是自动增加的不是静态的！
String nowDate = DateTime.Now.ToString();
            this.time.Text = nowDate;  这样的显示没用是  静态的 
------解决方案--------------------------------------------------------

function getCurDate() {
                var d = new Date();
                var week;
                switch (d.getDay()) {
                    case 1: week = "星期一"; break;
                    case 2: week = "星期二"; break;
                    case 3: week = "星期三"; break;
                    case 4: week = "星期四"; break;
                    case 5: week = "星期五"; break;
                    case 6: week = "星期六"; break;
                    default: week = "星期天";
                }
                var years = d.getFullYear();   
                var month = add_zero(d.getMonth() + 1);
                var days = add_zero(d.getDate());
                var hours = add_zero(d.getHours());
                var minutes = add_zero(d.getMinutes());
                var seconds = add_zero(d.getSeconds());
                var ndate = years + "年" + month + "月" + days + "日 " + hours + ":" + minutes + ":" + seconds + " " + week;
                document.getElementById("times").innerHTML = ndate;
            }

            function add_zero(temp) {
                if (temp < 10) return "0" + temp;