Getting Code Execution Time

Ever tried doing real time performance testing for a piece of code on the basis of how much time it took to execute.

The following code will help you to get the exact time taken for a piece of code to execute.

Let's make a class and introduce a nested loop (nothing fancy as we only want to get the execution time) as in the following: 

public class TestingExecutionTime
{
    public static void EngageTime()
    {
        for (int i = 0; i < 100; i++)
        {
            for (int j = 0; j < 1000; j++)
            {
                Console.WriteLine("Loop ");

            }

        }
    }
}

In the class where you want to make a call to the above function, include the namespace "using System.Diagnostics;"

Make an object of the Stopwatch class of the Diagnostic namespace and call the previous function.

You need to follow the below steps:

1. Reset the StopWatch
2. Start Stopwatch
3. Call the code
4. Stop the Stopwatch
5. Get Elapsed Time in the required format 

Following is the detailed code:

Stopwatch stp = new Stopwatch();

    stp.Reset();
    stp.Start();
    TestingExecutionTime.EngageTime();
    stp.Stop();

    TimeSpan ts = stp.Elapsed;
    // Format and display the TimeSpan value.
    string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}",
        ts.Hours, ts.Minutes, ts.Seconds,
        ts.Milliseconds / 10);
    Console.WriteLine(elapsedTime);
    Console.ReadKey();

The output for the same come out to be: 00:00:07.56