How to use Stopwatch in C#

Create an object of Stopwatch class and start it, then execute the method, logic whose execution time is to be calculated. Next stop the watch shown below.

Stopwatch watch = new Stopwatch();

watch.Start();           

for (int i = 0; i < 100000; i++)

{

   for (int j = 0; j < 20000; j++)

   { 

                    // To waste some time....:P

   }

}

watch.Stop();

double time_wasted = watch.Elapsed.TotalSeconds;

// To round 

double time_wasted_rounded = Math.Round(watch.Elapsed.TotalSeconds);