Calculate the Seconds, Milliseconds and Microseconds using C# and VB.NET

Recently I was helping out a colleague to calculate the difference between two DateTime. The requirement was to calculate the difference to the Milliseconds and Microsecond level. Here’s what I suggested using DateTime.Ticks. A single tick represents one hundred nanoseconds or one ten-millionth of a second.

Update: As mentioned by Markus Olsson and others in the comments section, an accurate and a better way of measuring time is to use the StopWatch class. Check this post.

C#

using System;

class Program
{
static void Main(string[] args)
{
    try
    {
        long startTick = DateTime.Now.Ticks;
        long endTick = DateTime.Now.Ticks;
        long tick = endTick - startTick;
        long seconds = tick / TimeSpan.TicksPerSecond;
        long milliseconds = tick / TimeSpan.TicksPerMillisecond;
        long microseconds = tick / 10;
        Console.WriteLine("Seconds Elapsed :" + seconds);
        Console.WriteLine("Millseconds Elapsed :" + milliseconds);
        Console.WriteLine("Microseconds Elapsed :" + microseconds);
        Console.ReadLine();
    }
    catch (Exception ex)
    {
        // handle ex
    }
}
}

VB.NET

Imports System

Friend Class Program
Shared Sub Main(ByVal args() As String)
    Try
        Dim startTick As Long = DateTime.Now.Ticks
        Dim endTick As Long = DateTime.Now.Ticks
        Dim tick As Long = endTick - startTick
        Dim seconds As Long = tick / TimeSpan.TicksPerSecond
        Dim milliseconds As Long = tick / TimeSpan.TicksPerMillisecond
        Dim microseconds As Long = tick \ 10
        Console.WriteLine("Seconds Elapsed :" & seconds)
        Console.WriteLine("Millseconds Elapsed :" & milliseconds)
        Console.WriteLine("Microseconds Elapsed :" & microseconds)
        Console.ReadLine()
    Catch ex As Exception
        ' handle ex
    End Try
End Sub
End Class

OUTPUT

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