mvc获取时间戳

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