using System;

using System.Globalization;

using System.Diagnostics;

​

class Program

{

    static void Main()

    {

        string datetimeString = "2024-07-16T02:28:45.516224833Z";

        TimestampDemo(datetimeString);

        PicoSecondDemo();

    }

    private static void TimestampDemo(string datetimeString)

    {

        Console.WriteLine("================= TimestampDemo : START =================");

        // Parse the datetime string to DateTimeOffset

        DateTimeOffset dateTimeOffset = DateTimeOffset.Parse(datetimeString, CultureInfo.InvariantCulture, DateTimeStyles.AssumeUniversal);

        Console.WriteLine(dateTimeOffset.Ticks.ToString("N0"));

​

        // Convert to Unix time in seconds

        long unixTimeSeconds = dateTimeOffset.ToUnixTimeSeconds();

        Console.WriteLine($"Total Seconds: {dateTimeOffset.TimeOfDay.TotalSeconds.ToString("N10", CultureInfo.InvariantCulture)}");

​

        // Get the fractional part of the seconds

        double fractionalSeconds = dateTimeOffset.TimeOfDay.TotalSeconds % 1;

​

        // Combine seconds and fractional seconds for high precision Unix timestamp

        decimal unixTimestamp = unixTimeSeconds + (decimal)fractionalSeconds;

​

        // Output the result with 10 decimal precision

        Console.WriteLine(unixTimestamp.ToString("N9", CultureInfo.InvariantCulture));

        var utcNow = DateTimeOffset.UtcNow;

        long utcNowTicks = utcNow.Ticks;

        Console.WriteLine($"UTCNow ticks: {utcNowTicks.ToString("N0")}");

        var baseTicks = (new DateTime(1970, 1, 1)).Ticks;

        Console.WriteLine($"UNIX   ticks: {baseTicks.ToString("N0")}");

        Console.WriteLine($"subtra ticks: {(utcNowTicks - baseTicks).ToString("N0").PadLeft(baseTicks.ToString("N0").Length, ' ')}");

        Console.WriteLine($"subtra milli: {utcNow.ToUnixTimeMilliseconds().ToString("N0").PadLeft(baseTicks.ToString("N0").Length, ' ')}");

        Console.WriteLine("================= TimestampDemo : END ===================\n");

    }

    private static void PicoSecondDemo()

    {

        // Create a new stopwatch

        Stopwatch stopwatch = new Stopwatch();

        // Start the stopwatch

        stopwatch.Start();

​

        // Perform some operations

        // For example, sleep for a short time

        System.Threading.Thread.Sleep(1);

​

        // Stop the stopwatch

        stopwatch.Stop();

​

        // Get the elapsed time in ticks (100 nanoseconds each)

        long elapsedTicks = stopwatch.ElapsedTicks;

        // Get the frequency of the stopwatch in ticks per second

        long ticksPerSecond = Stopwatch.Frequency;

​

        // Calculate the elapsed time in seconds

        double elapsedSeconds = (double)elapsedTicks / ticksPerSecond;

​

        // Convert elapsed time to picoseconds

        double elapsedPicoseconds = elapsedSeconds * 1e12;

        Console.WriteLine($"Elapsed time: {elapsedPicoseconds} picoseconds");   

    }

}

​