Question

Is there an C# attribute (for method) to calculate the time of execution of this method? Is there another way?

Answer 1

If you are wanting to write some test code to profile various functions or parts thereof you would use a System.Diagnostics.Stopwatch to keep track of elapsed time. Like this:

public void DoSomething(){
  Stopwatch stopWatch = new Stopwatch();
  stopWatch.Start();

  //stuff you want to time

  stopWatch.Stop();

  System.Console.Writeln(String.Format("Total Ticks: {0}", stopWatch.ElapsedTicks))
}

If it’s a more general thing you want to do (ie work out what parts of a program are slow) then use a profiler like some of the other answers suggest.