using System; using System.Collections.Generic; using System.Text; 

using System.Diagnostics; 

public static class Program

{

    /// <summary>

    ///  Human readable TimeStamp using modern Action delegate, leaving out zero parts and variable length placeholder formating 

    /// </summary>

    /// <param name="milliseconds">a long type</param>

    /// <returns>Human readable timespan string</returns>

    public static string HumanReadableTimeSpan(this long milliseconds)

    {

        if (milliseconds == 0) return "0 ms"; 

​

        StringBuilder sb = new StringBuilder(); 

        Action<int, StringBuilder, int> addActionToSB =  //or pass an entire new format!

        (val, displayunit, zeroplaces) => 

        {if (val > 0) 

            sb.AppendFormat(

                    " {0:DZ}X".Replace("X", displayunit.ToString())

                    .Replace("Z",zeroplaces.ToString())        

                    ,val

                ); 

        };

​

        var t = TimeSpan.FromMilliseconds(milliseconds);

​

        //addActionToSBList(timespan property, readable display displayunit, number of zero placeholders) //Sun 24-Sep-17 8:30pm metadataconsulting.ca - Star Trek Disco

        addActionToSB(t.Days, new StringBuilder("d"),  1); 

        addActionToSB(t.Hours, new StringBuilder("h"), 2);

        addActionToSB(t.Minutes, new StringBuilder("m"), 2);

        addActionToSB(t.Seconds, new StringBuilder("s"), 2);

        addActionToSB(t.Milliseconds, new StringBuilder("ms"), 3); 

        return sb.ToString().TrimStart();

    }

    public static void Main()

    {

         Stopwatch sw = new Stopwatch();

         Console.WriteLine("Human Readable TimeSpan"); 

         sw.Start();

         string output = 111311234567L.HumanReadableTimeSpan();

         sw.Stop();

         Console.WriteLine(output); 

         Console.WriteLine(sw.ElapsedTicks+" ticks"); 

    }

}