How to get the percentage of time in hours...?

Question

I am developing a web application using asp.net c#. In that I need to get the percentage of Time. I am not getting the correct way to accomplish this. I have TotalHours which is coming from db. I need to calculate the 80% of that TotalHours.

Help will be appreciated. Thanks...

//This is how I am getting the TotalTime
TimeSpan TotalTime = TimeSpan.Parse(totalhours);

if(TotalTime != null)
{

TimeSpan Percentage= ( TotalTime* 80 ) / 100;
// here I need to get correct percentage in hrs
// If TotalTime is 10 hrs then Percentage should be 8 hrs 

}

possible duplicate of [Multiply TimeSpan in .NET](http://stackoverflow.com/questions/9909086/multiply-timespan-in-net) — Rhumborl, Jul 04 '15 at 10:09
If it's coming from the db, you should not be calling `TimeSpan.Parse` because you should not store time as strings in your db. Instead, determine the precision you care about (ex, minutes) and store an integer number of that precision. Then use `TimeSpan.FromMinutes`, `TimeSpan.TotalMinutes`, or similar methods for other precisions. — Matt Johnson-Pint, Jul 08 '15 at 20:17

score 3 · Answer 1 · answered Jul 04 '15 at 10:14

3

TimeSpan TotalTime = TimeSpan.Parse("10:00:00");

if (TotalTime != null)
{
    var ticks = ((TotalTime.Ticks * 80) / 100);
    TimeSpan Percentage = new TimeSpan(ticks);
    Console.WriteLine(Percentage);  // 8 hours
}

answered Jul 04 '15 at 10:14

Chris Schubert

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Plus 1. I like this as it takes total time i.e. Ticks and not just hours. – Nikhil Agrawal Jul 04 '15 at 10:16
@NikhilAgrawal yeh, I wrote the same thing 7 mins ago, but whatever :) – msmolcic Jul 04 '15 at 10:17
Plus 1 to you too @msmolcic. – Nikhil Agrawal Jul 04 '15 at 10:20

msmolcic · Answer 2 · 2015-07-04T10:14:07.873

2

TimeSpan totalTime = new TimeSpan(10, 0, 0);
TimeSpan percentage = TimeSpan.FromMilliseconds((totalTime.TotalMilliseconds * 80) / 100);

Get total miliseconds from your totalTime, do the math and convert it back to TimeSpan from miliseconds.

If you're satisfied with hours simply change:

TimeSpan percentage = TimeSpan.FromHours((totalTime.TotalHours * 80) / 100);

edited Jul 04 '15 at 10:14

answered Jul 04 '15 at 10:08

msmolcic

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Soner Gönül · Answer 3 · 2015-07-04T10:15:11.657

0

TotalHours property of TimeSpan returns total number of hours as a double. That's why you can calcutate %80 of your TimeSpan like;

double Percentage = (TotalTime.TotalHours * 4) / 5;

edited Jul 04 '15 at 10:15

answered Jul 04 '15 at 10:08

Soner Gönül

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How to get the percentage of time in hours...?

3 Answers3