mvc获取时间戳

DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
                                    DateTime dtNow = DateTime.Parse(DateTime.Now.ToString());
                                    TimeSpan toNow = dtNow.Subtract(dtStart);
                                    string timeStamp = toNow.Ticks.ToString();
                                    timeStamp = timeStamp.Substring(0, timeStamp.Length - 7);