Depends on what you are trying to do, but I suspect that Timers are not what you want at all.
The
Timer class[
^] provides events and allows you to do someting at regular intervals - it had nothing to do with "total time and seconds" because it is concerned only with an interval between "ticks": the point at which it signals an event and your code in teh handler method runs automattically. It also isn't that accurate - it depends what else is going on as to when your timer tick event handler executes (it isn't in "real-time" or even close).
What I suspect you want to look at is the
Stopwatch class[
^] which doesn;t provide any events but is very good (and nicely accurate) at workign out how long it took to do something.
If you want to do something at intervals, or you want to limit how much time users can take to do something, then use a Timer, otherwise, you are probably better off with a Stopwatch.