Work time calc - How to convert decimal to "hh:mm"?

Question

DateTime dt1 = DateTime.Parse(label1.Text);
DateTime dt2 = DateTime.Parse(label2.Text);
TimeSpan ts1 = dt2 - dt1;

DateTime dt3 = DateTime.Parse(label3.Text);
DateTime dt4 = DateTime.Parse(label4.Text);
TimeSpan ts2 = dt4 - dt3;


TimeSpan workTime = ts1 + ts2;

label5.Text = workTime.TotalHours.ToString();

So my question is how to modify this code snippet so that it converts the numbers it outputs from decimal to "hh:mm"?

@PatrickHofman that's not correct because it will not show _total_ hours. If timespan is 1 day 2 hours - it will format as "02:00", not "26:00" (as I think OP wants). — Evk, Mar 02 '17 at 12:14
@HimBromBeere you have to escape the `:` to `ToString("hh\\:mm")` or `ToString(@"hh\:mm")`. It would indeed be the simplest approach if we knew `workTime` won't be more than a day. — Jon Hanna, Mar 02 '17 at 12:36
@Jon Hanna it won't be more than a day. in fact its exactly eight hours. But if i work longer than that i want the program to show me the overtime. — Paludis, Mar 02 '17 at 12:49

score 4 · Accepted Answer · answered Mar 02 '17 at 12:20

4

If you want to include total hours (so that it will convert whole days to hours too), you can do it like that:

String.Format("{0:D2}:{1:D2}", (int)workTime.TotalHours, workTime.Minutes);

answered Mar 02 '17 at 12:20

Evk

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score 0 · Answer 2 · answered Mar 02 '17 at 12:53

From comment:

it won't be more than a day

Then

label5.Text = workTime.ToString(@"hh\:mm");

is simplest, and correct. If you aren't 100% sure it won't be more than a day then Evk's answer is the one to go with, as the above will display 25 hours as "01:00" while Evk's will render it correctly as "25:00".

Work time calc - How to convert decimal to "hh:mm"?

2 Answers2