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How to format the results of DateDiff ??

Posted on 2012-04-06
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Last Modified: 2012-04-06
Hello Experts,

I must be brain dead today because I can't figure out what must be a very simple problem.

I have an app that requires a timer to report elapsed time.

 I have a start button and a stop button

I find the difference like this:

lblElapsedTime.Text = DateDiff(DateInterval.Second, Date1, Date2).ToString


However, I want lblElapsedTime.text to be in the HH:MM:SS format.

Instead the label counts up in seconds.  after 60 seconds it just keeps counting up.  427 seconds doesn't mean anyting to users they want to know HH:MM:SS

How can I format the results ?

Thanks,
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Question by:Steve5140
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LVL 38

Accepted Solution

by:
PaulHews earned 500 total points
ID: 37816095
Rather than use DateDiff, use Subtract, which returns a timespan which will give you a nicer formatting when calling tostring.

 lblElapsedTime.Text = Date2.Subtract(Date1).ToString
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Author Comment

by:Steve5140
ID: 37816159
Paul - That works thank you very much !!

Now I need to add a "Pause" function to the timer.

Can you recommend any built in functions to help with that ?

(I'll give you the points anyway - you answered the question I asked, thank you very much.)
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LVL 38

Expert Comment

by:PaulHews
ID: 37816193
You might look at using the stopwatch class, which is useful for capturing elapsed time.  Start and Stop would effectively give you a "Pause" functionality.
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Author Comment

by:Steve5140
ID: 37816220
Very nice !!!  I was not aware of that class.

Thanks so very much.
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