The timer class of version C is accurate to microseconds and retains one decimal place after seconds. It supports the output of year, month, day, hour, minute and second with units

 class TimeCount { // Temporary variable , Store the maximum year value that the current class can represent private static ulong MaxYear = 0; /// <summary> /// Gets the maximum number of years that can be represented in milliseconds /// </summary> /// <returns> Maximum number of years </returns> public static ulong GetMaxYearCount() { if (TimeCount.MaxYear != 0) return TimeCount.MaxYear; else { double ulongMax = Math.Pow(2, 64); double yearToMiliseconds = (double)12 * (double)30 * (double)24 * (double)3600 * (double)1000; TimeCount.MaxYear = (ulong)(ulongMax / yearToMiliseconds); return TimeCount.MaxYear; } } /// <summary> /// Convert the current system time into milliseconds /// </summary> /// <returns> The number of milliseconds corresponding to the current system time </returns> public static ulong GetCurrentTimeByMiliSec() { DateTime t = DateTime.Now; ulong millisecond = ((((((ulong)t.Year * 12 + (ulong)t.Month) * 30 + (ulong)t.Day) * 24 + (ulong)t.Hour) * 60 + (ulong)t.Minute) * 60 + (ulong)t.Second) * 1000 + (ulong)(t.Millisecond); return millisecond; } /// <summary> /// Less practical functions , Given three inputs , Get the time difference , Returns... As a string /// </summary> /// <param name="str"> Prefix before time , for example “ draw XX Time used is ：”</param> /// <param name="a"> First time </param> /// <param name="b"> Second time , It doesn't matter , In short, the absolute value will be taken in the end </param> /// <returns></returns> public static string GetTimeInterval(string str, ulong a, ulong b) { ulong interval = b - a; str += Convert.ToString(Math.Abs(( ((double)interval)/1000))); str += " second "; return str; } /// <summary> /// Get two given times （ millisecond ） Time difference between , The final value will go to the absolute value /// </summary> /// <param name="a"> Earlier （ millisecond ）</param> /// <param name="b"> Later （ millisecond ）</param> /// <returns></returns> public static double GetTimeInterValBySec(ulong a, ulong b) { return Math.Abs(((double)b - (double)a)/(double)1000); } /// <summary> /// Keep one decimal place after the decimal point /// </summary> /// <param name="double1"> A decimal fraction </param> /// <returns> A string </returns> public static string RemainOneFigureAfterDot(double double1) { string tempStr = double1.ToString(); string double1str; if (tempStr == "") { return "0.0"; } int index = tempStr.IndexOf("."); if (index == -1) { double1str = tempStr + ".0"; return double1str; } else { if (tempStr.Length < index + 2) return tempStr + ".0"; else { double1str = tempStr.Substring(0, index + 2); return double1str; } } } /// <summary> /// The time of month, day and year is divided into seconds /// </summary> public enum YMDHmS { yearSc = 365 * 24 * 3600, monSc = 30 * 24 * 3600, daySc = 24 * 3600, houSc = 3600, minSc = 60 } /// <summary> /// Put one String Time in seconds in format , Convert to time string in mm / DD / yyyy, hour, minute and second , And keep one decimal place in the last second /// </summary> /// <param name="seconds"> Number of seconds ,string Format </param> /// <returns></returns> public static string SecondsToYYMMDDhhmmss(string seconds) { double secondsDble = Convert.ToDouble(seconds); return TimeCount.SecondsToYYMMDDhhmmss(secondsDble); } /// <summary> /// Put one int Time in seconds in format , Convert to time string in mm / DD / yyyy, hour, minute and second , And keep one decimal place in the last second /// </summary> /// <param name="seconds"> Number of seconds ,int Format </param> /// <returns></returns> public static string SecondsToYYMMDDhhmmss(int seconds) { double secondsDble = Convert.ToDouble(seconds); return TimeCount.SecondsToYYMMDDhhmmss(secondsDble); } /// <summary> /// Put one ulong Time in seconds in format , Convert to time string in mm / DD / yyyy, hour, minute and second , And keep one decimal place in the last second /// </summary> /// <param name="seconds"> Number of seconds ,ulong Format </param> /// <returns></returns> public static string SecondsToYYMMDDhhmmss(ulong seconds) { double secondsDble = Convert.ToDouble(seconds); return TimeCount.SecondsToYYMMDDhhmmss(secondsDble); } /// <summary> /// Put one double Time in seconds in format , Convert to time string in mm / DD / yyyy, hour, minute and second , And keep one decimal place in the last second /// </summary> /// <param name="secondsDble"> Number of seconds ,double Format </param> /// <returns></returns> public static string SecondsToYYMMDDhhmmss(double secondsDble) { string returnSTR = ""; if (secondsDble == 0) { return "0.0 second "; } int YY = 0, MM = 0, DD = 0, HH = 0, mm = 0; if (secondsDble >= (uint)YMDHmS.yearSc)// year { while (secondsDble > 0) { secondsDble -= (uint)YMDHmS.yearSc; YY++; } secondsDble += (uint)YMDHmS.yearSc; YY--; } if (secondsDble >= (uint)YMDHmS.monSc)// month { while (secondsDble > 0) { secondsDble -= (uint)YMDHmS.monSc; MM++; } secondsDble += (uint)YMDHmS.monSc; MM--; } if (secondsDble >= (uint)YMDHmS.daySc)// Japan { while (secondsDble > 0) { secondsDble -= (uint)YMDHmS.daySc; DD++; } secondsDble += (uint)YMDHmS.daySc; DD--; } if (secondsDble >= (uint)YMDHmS.houSc)// when { while (secondsDble > 0) { secondsDble -= (uint)YMDHmS.houSc; HH++; } secondsDble += (uint)YMDHmS.houSc; HH--; } if (secondsDble >= (uint)YMDHmS.minSc)// branch { while (secondsDble > 0) { secondsDble -= (uint)YMDHmS.minSc; mm++; } secondsDble += (uint)YMDHmS.minSc; mm--; } if (YY != 0) returnSTR += YY.ToString() + " year "; if (MM != 0) returnSTR += MM.ToString() + " month "; if (DD != 0) returnSTR += DD.ToString() + " God "; if (HH != 0) returnSTR += HH.ToString() + " Hours "; if (mm != 0) returnSTR += mm.ToString() + " branch "; if (secondsDble < 10) { returnSTR += "0" + TimeCount.RemainOneFigureAfterDot(secondsDble) + " second "; } else { returnSTR += TimeCount.RemainOneFigureAfterDot(secondsDble) + " second "; } return returnSTR; } }