Best way for duration - time pasted

Hello, i want to ask you which is the best way to keep duration between two events for example 2 buttons press... I want the first to get the current time

Code:

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DateTime.Now

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and the second do the same and then calculate the duration, i managed to do this but i have some problems...

if the first button is pressed 23:00:00 (hour/minutes/sec) and the second button is pressed at 01:00:00 the calculation is wrong.... i want a way to do it for any time duration from 5 seconds to 5 years (for example)... so which is the best way ?

Look at using TimeSpan.

DateTime prev = DateTime.Now;
...
// some time later
...
TimeSpan diff = DateTime.Now - prev;

Use a TimeSpan:

Code:

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DateTime start = DateTime.Now;
...
DateTime end = DateTime.Now;
TimeSpan span = end - start;

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EDIT: ninja'd :)

thanks all of you, thanks

Code:

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TimeSpan diff = DateTime.Now - DateTime.Parse(chargedataGridView.Rows[oRow.Index].Cells[1].Value.ToString()) ;
TimeSpan duration = new TimeSpan(diff.Hours, diff.Minutes, diff.Seconds);
chargedataGridView.Rows[oRow.Index].Cells[1].Value = duration.ToString();

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i have this, it doesn't works if the first event is 23:00:00 and the second 1:00:00 and because i have it on a timer it flashes every timer tick, it shows me the very first value of cell and then the duration... all the time the same... my datagridview have add edit delete option disabled... this is the wrong ?

There is also Stopwatch class.

"DateTime.Parse(chargedataGridView.Rows[oRow.Index].Cells[1].Value.ToString()) "

And what value do you expect that to give you? Did you check the output of that function call?

pfff my bad i understand what you mean about what it gives me... you are right.. ill solve it now thanks..