使用TimeSpan计算时差

Question

I am trying to calculate the time difference of two given times slots but the answers does not seem to be correct what am I doing wrong?

My code:

For some reason the value given amFinish is changed from 16:30 to 16:18:00 I have no idea why!

And What if I have a text box and the user enters 16.30 how would I take that value and compute it as 16hrs and 30mins

The answer should be 05.30 but instead I get 05.18. Any sugestions?

Answer 1

30% of an hour is 18 minutes.

16.30 hours is 16 hours and 30/100 parts of an hour.

16 hours and a half would be 16.50.

Answer 2

You have decimal 16.3 hours, which is 16 hours and 18 minutes as Oded explains.

If you need to specify both hours, minutes, and seconds, use the overload of the TimeSpan constructor which takes three arguments:

TimeSpan amStart = new TimeSpan(0, 11, 0);
TimeSpan amFinish = new TimeSpan(16, 30, 0);

And if you need to convert a string into a TimeSpan , use something like:

TimeSpan amFinish = TimeSpan.ParseExact("16.30", @"hh\.mm", CultureInfo.InvariantCulture);