Re: DateTime manipulation

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Nicholas Paldino [.NET/C# MVP] <mvp@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>     I think the problem here is that you have the time the store is open as 
> a time, and not really a date.  You don't store every date that the store is 
> open, just the general hours.  This information is in a TimeSpan.
> 
>     Then, you have the current date.  What I think you should do is create 
> the current date the store opens for the day you are comparing.  So, assume 
> you have the time the store opens in a TimeSpan, like so:
> 
> TimeSpan storeOpen;
> 
>     And then you get the current date.
> 
> DateTime now = DateTime.Now;
> 
>     Once you have that, you just need to know when the store opens today:
> 
> DateTime storeOpensToday = (now - now.TimeOfDay) + storeOpen;
> 
>     Then, you can compare that against now:
> 
> if (now >= storeOpensToday)
> {
>     // Perform your work.
> }

Note that it's important to only take DateTime.Now *once* (as Nick has 
done above). If you use it twice, it's possible that the day will 
change between calls!

I'd use now.Date rather than (now - now.TimeOfDay) though.

-- 
Jon Skeet - <skeet@xxxxxxxxx>
http://www.pobox.com/~skeet   Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too
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