how to measure time between 2 button press ? (winCE + C#)

Question

hi

i need to measure time between 2 button press

in Windows-CE C#

how do do it ?

thank's in advance

Answer 1

Define a variable when the button is clicked once to NOW(). When you click a second time, measure the difference between NOW and your variable.

By doing NOW - a DateTime variable, you get a TimeSpan variable.

Answer 2

DateTime? time;

buttonClick(....)
{
    if (time.HasValue)
    {
        TimeSpan diff = DateTime.Now.Subtract(time.Value);
            DoSomethingWithDiff(diff);
        time = null;
    }
    else
    {
        time = DateTime.Now;
    }
}

Answer 3

DateTime.Now may not be precise enough for your needs. http://blogs.msdn.com/b/ericlippert/archive/2010/04/08/precision-and-accuracy-of-datetime.aspx (Short short version: DateTime is extremely precise, DateTime.Now -> not so much.)

If you want better precision, use the Stopwatch class (System.Diagnostics.Stopwatch).

Stopwatch watch = new Stopwatch();
watch.Start();

// ...

watch.Stop();
long ticks = watch.ElapsedTicks;