Using a Variable TimeSpan

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I need to use different values with a TimeSpan but I cannot get it to work. What I would like is something like this:

C#

TimeSpan mySpan = new TimeSpan();

mySpan = (Convert.ToInt16(DateTime.Parse(DataDoc.SelectSingleNode("/Resource/TimeSteps/TS[24]").InnerText).ToString("HH")), Convert.ToInt16(DateTime.Parse(DataDoc.SelectSingleNode("/Resource/TimeSteps/TS[24]").InnerText).ToString("mm")), 0);

But I cannot get this to work so how would I create a variable called mySpan and change its variable separately with this code:?

C#

Convert.ToInt16(DateTime.Parse(DataDoc.SelectSingleNode("/Resource/TimeSteps/TS[24]").InnerText).ToString("HH")), Convert.ToInt16(DateTime.Parse(DataDoc.SelectSingleNode("/Resource/TimeSteps/TS[24]").InnerText).ToString("mm")), 0);

Thank you.

Posted 6-Sep-13 8:20am

Henry Hunt

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phil.o · Answer 1 · 2013-09-06T08:31:00

There is a much simpler way.

First get your int parts from DateTime:

C#

DateTime myDate;

if (DateTime.TryParse(DataDoc.SelectSingleNode("/Resource/TimeSteps/TS[24]").InnerText, out myDate) {
   int hours = myDate.Hour;
   int minutes = myDate.Minute;

Then construct your TimeSpan:

C#

   TimeSpan ts = TimeSpan.FromHours(hours) + TimeSpan.FromMinutes(minutes);
}

EDIT: Seeing OriginalGriff's answer, I realize we're on Friday evening and that I should be drinking beer with friends instead of writing code. Here's an updated, even simpler solution:

C#

if (DateTime.TryParse(DataDoc.SelectSingleNode("/Resource/TimeSteps/TS[24]").InnerText, out myDate) {
   TimeSpan ts = new TimeSpan(myDate.Hour, myDate.Minute, 0);
}

OriginalGriff · Answer 2 · 2013-09-06T08:33:00

Solution 2

If I rip your code apart for a moment, and put it back together differently so we can see what you have got so far:

C#

TimeSpan mySpan = new TimeSpan();

string s1 = DataDoc.SelectSingleNode("/Resource/TimeSteps/TS[24]").InnerText;
DateTime dt1 = DateTime.Parse(s1);
short i1  = Convert.ToInt16(dt1.ToString("HH"));
string s2 = DataDoc.SelectSingleNode("/Resource/TimeSteps/TS[24]").InnerText;
DateTime dt2 = DateTime.Parse(s2);
short i2  = Convert.ToInt16(dt2.ToString("mm"));

mySpan = (i1, i2, 0);

And you are surprised it doesn't work? What is the last bit supposed to be? Or do? The compiler doesn't know, and frankly I have no idea either.
If you mean to construct a new TimeSpan then it's simple:

C#

mySpan = new TimeSpan(i1, i2, 0);

Will do it...

Posted 6-Sep-13 8:33am

OriginalGriff

Comments

Menon Santosh 6-Sep-13 14:37pm

my + 5

Henry Hunt 6-Sep-13 14:46pm

Thank you...I now have this code but there is a problem:

int minutes = Convert.ToInt16(DateTime.Parse("2013-09-05T14:00:00").ToString("mm"));
int hours = Convert.ToInt16(DateTime.Parse("2013-09-05T14:00:00").ToString("HH"));

TimeSpan mySpan = new TimeSpan(minutes, hours, 0);

int totalSecondsSinceMidnight = Convert.ToInt32(mySpan.TotalMinutes);
MessageBox.Show(totalSecondsSinceMidnight.ToString());

It returns 14 and there surely aren't 14 minutes since midnight are there? Could you work out why this is? Thank you.

OriginalGriff 6-Sep-13 14:49pm

Ahem:
new TimeSpan(minutes, hours, 0);
If you look at MSDN you will see it is the other way round:
new TimeSpan(hours, minutes, 0);

Henry Hunt 6-Sep-13 15:09pm

Thank you, that worked.

OriginalGriff 6-Sep-13 15:16pm

You're welcome!