C#: How do I convert a TimeSpan value to a double?

Question

How do I convert a TimeSpan value to a double in C#?

I mean I have this -08:15:00 and I want a double -08.15.

Philanthropy

Why would you want to do that? 8 minutes and 15 seconds is not equal to 8.15 minutes. – Naturism

@KirkWoll: It's not unheard of to represent an angle such as 22°39'46" like 22.3946, so maybe that's what OP wants. – Wilscam

Everything considered, your question is ambiguous at best. is 8:15:00 h/m/s, or is it m/s/ms? And did you really mean 8:15:00 -> 8.15, or should it be 8:15:00 -> 8.25? – Succession

Answer 1

Despite how ambiguous this question is, for future reference, Umar was probably the closest to answering the question, as it was displayed in the title.

To get a double from a TimeSpan object, you need to pick the most significant measurement, and get the total. As the Total<x> property, will return the appropriate full value, and the fractions of that value as a decimal.

So, if you want 8:15:00, to a double - and the "8" represents Hours, then you'll want TimeSpan.TotalHours which will result in a value of 8.25.

If the "8" represents Minutes, then again, you'll use the appropriate property TimeSpan.TotalMinutes for the same result, and so on.

Succession

Thank you for the quick reference, I wonder if OP was downvoted because of the wrong conversion from -08:15:00 to -08.15 instead of -08.25, the question itself is legit in itself. If you are making a system that is to be used by book keepers to manage salary based on how much you've worked you'll need something like this. – Gooseflesh

Answer 2

You could use TimeSpan.TotalMinutes (gets the value of the current TimeSpan structure expressed in whole and fractional minutes) or other similar properties.

Nerin

Answer 3

Do not repeat this at home!

double value = (timeSpan.Hours + timeSpan.Minutes / 100.0 + timeSpan.Seconds / 10000.0) * (timeSpan > TimeSpan.Zero ? 1 : -1);

Eurythmics

This won't be accurate because it will ignore Days, Hours and Milliseconds. – Nerin

@UmarFarooqKhawaja Not Hours, actually – Lusterware

Indeed, @VMAtm! – Nerin

how about: (timeSpan.Hours + timeSpan.Minutes / 60.0 + timeSpan.Seconds / 3600.0) * (timeSpan > TimeSpan.Zero ? 1 : -1); – Dialyze

Answer 4

In the case of operations with DateTime in its double format obtained with .ToOADate(), TimeSpan must be converted to double directly with .TotalDays since the unit (1.0) for DateTime is a day.

With a functional mindset:

public static class Extension
{
    public static double ToDouble(this TimeSpan o) => o.TotalDays;
}

Sexennial

Answer 5

You can use string.format, then parse it like this:

   double.Parse(string.Format("-HH.mm"))

Lura