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How do I use TimeSpan in calculations across midnight

How do I use the C# TimeSpan in calculations that has ranges that cross midnight? I have the following code that works like I need it too, except for when it needs to cross midnight.

TimeSpan start = new TimeSpan(23,30,0); //11:30pm
TimeSpan end = new TimeSpace(0,0,0); //12:00 am
TimeSpan now = DateTime.Now.TimeOfDay;

if ((now >= start) && (now <= end))
{
// do something
}

SOLUTION

Kyle Abrahams, PMP

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SOLUTION

kaufmed

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ASKER CERTIFIED SOLUTION

Mike Tomlinson

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dws02432

ASKER

Thanks. Your tips/answer worked. I wound up using the absolute times as suggested. This is what I changed the TimeSpan option to:

DateTime rightNow = DateTime.Now;
DateTime start = new DateTime(rightNow,Year,rightNow.Month,rightNow.Day,23,30,0); //11:30pm
DateTime end = new DateTime(rightNow,Year,rightNow.Month,rightNow.Day,0,0,0); //12:00 am
DateTime now = DateTime.Now.TimeOfDay;

if (end < start_
end.AddDays(1);

if ((now >= start) && (now <= end))
{
// do something
}

dws02432

ASKER

To Idle_Mind, yeah I noticed that you couldn't use AddDays with the TimeSpan object. But,then I noticed that ged325 had recommended using the absolute times, which would also work instead of using theTimeSpan object.

Thanks for the additional solution using the TimeSpan object.

Mike Tomlinson

See my answer... =)

I think it's cleaner to declare the TimeSpan since it's easier to understand and modify in the future, then add that to a DateTime.

Also see kaufmed's comment about AddDays() not being "in-place". You need to assign the result of AddDays() back to your variable to replace it.

dws02432

ASKER

Thanks for the help! Thoughtful knowledgeable answers, and quick response. Greatly appreciated!