Timer start time and end time calculation gives 4 secs extra

Question

i am working on WP8 , i am using timer where i am calulating the total time.

This is how i am doing it:

timer = new DispatcherTimer();
 timer.Interval =          


        

Answer 1

You are using the wrong tool for calculating time. You should StopWatch instead of timer. Timer is used to do something that is meant to happen at a regular interval.