In C# I have from and to DateTime vales and want to check whether a value DateTime is within the range, how can I do this?
lowerBound = "01-Dec-2011 09:45:58"
upperBound = "01-Dec-2011 09:38:58"
value = "01-Dec-2011 09:49:58"
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Chris Fulstow
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shamim
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http://stackoverflow.com/questions/2553663/how-to-determine-if-birthday-or-anniversary-occured-during-date-range – giftcv Dec 01 '11 at 06:23
1 Answers
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Just use the comparison operators as you would for numbers:
DateTime lowerBound = new DateTime(2011, 12, 1, 9, 38, 58);
DateTime upperBound = new DateTime(2011, 12, 1, 9, 49, 58);
DateTime value = new DateTime(2011, 12, 1, 9, 45, 58);
// This is an inclusive lower bound and an exclusive upper bound.
// Adjust to taste.
if (lowerBound <= value && value < upperBound)
You'll need to be careful that the values are all the same "kind" (UTC, local, unspecific). If you're trying to compare instants in time, (e.g. "did X happen before Y") it's probably best to use UTC.
Jon Skeet
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Use Between function to get value between lowerBound and upperBound – Sreenath Plakkat Dec 01 '11 at 06:27
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4@SreenathPlakkat: Which `Between` function are you referring to? Sounds more like SQL than C#... – Jon Skeet Dec 01 '11 at 06:32
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@Jon Skeet - also note, that Kind property of DateTime is ignored during the comparison. – Lonli-Lokli Dec 01 '11 at 07:49
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@Lonli-Lokli: Indeed, which is why it makes sense to only use operands with the same kind, really. Anything else is likely to lead to confusion. – Jon Skeet Dec 01 '11 at 08:00