how can i return time span value?

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how can i return totaltime as a timespan type's?
or my solutin is right here?
and if you think this code have a mistake tell me ?

look at this code please and try to solve my problem .
activity is a list and timelenght equals endtime - starttime
i want to adding all of timeleght's here as totaltime and i dont know how can i return totaltime?

plaease help me?

but anywhere thank you

public TimeSpan calculateTotaltime()

    {
        foreach (Activity a in myData.activities)
        {
                a.totaltime += a.timelenght;


        }
        return   ?       ;

   }

help please

Posted 1-May-11 19:57pm

shiiiiir

Updated 1-May-11 20:56pm

v7

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3 solutions

Solution 1

DateTime then = DateTime.Now;
Thread.Sleep(1000);
TimeSpan span = DateTime.Now - then;

Posted 1-May-11 20:05pm

JF2015

Comments

Sergey Alexandrovich Kryukov 2-May-11 2:10am

No, this is not what OP is having a problem with...
Please see my answer.
--SA

shiiiiir 2-May-11 2:17am

i think we have a missunderstanding here ?
activity is a list and timelenght equals endtime - starttime

i want to adding all of timeleght's here as totaltime and i dont know how can i return totaltime?
but anywhere thank you

Solution 2

I don't know exactly what Activity type do you mean, so I don't know the type of the timelength. Depending on the units of you can create an instance of System.TimeSpan. For example, use static method System.TimeSpan.FromMilliseconds.

There are also the methods FromTicks, FromSeconds, FromMinutes, etc.
See http://msdn.microsoft.com/en-us/library/system.timespan.aspx[^].

—SA

Posted 1-May-11 20:08pm

Sergey Alexandrovich Kryukov

Updated 1-May-11 20:09pm

v2

Comments

shiiiiir 2-May-11 2:17am

i think we have a missunderstanding here ?
activity is a list and timelenght equals endtime - starttime

i want to adding all of timeleght's here as totaltime and i dont know how can i return totaltime?
but anywhere thank you

Sergey Alexandrovich Kryukov 2-May-11 3:41am

It does not matter what activity is. I answered the way it will work anyway. If Activity.timelength (honestly, observe proper capitalization by meeting (good) Microsoft naming conventions), it it is of the type TimeSpan, just return total time. As you write "?" at return, it means it's of some other type. Name it. I assume this is some integer representing milliseconds, seconds, etc. Then use System.TimeSpan.FromMilliseconds to get TimeSpan to return.
--SA

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markovl · Accepted Answer · 2011-05-01T20:59:00

If I understood your question correctly, what you need to do is sum all of activities' durations to get the total like this:

public TimeSpan calculateTotaltime()
{
    TimeSpan total = TimeSpan.Zero;
    foreach (Activity a in myData.activities)
        total += a.timelength;

    return total;
}

Here total is the sum of the durations of all the activities in your list.