Question

I need to know if a Date is between a DateRange. I have three dates:

// The date range
DateTime startDate;
DateTime endDate;

DateTime dateToCheck;

The easy solution is doing a comparison, but is there a smarter way to do this?

Answer 1

Nope, doing a simple comparison looks good to me:

return dateToCheck >= startDate && dateToCheck < endDate;

Things to think about though:

• DateTime is a somewhat odd type in terms of time zones. It could be UTC, it could be “local”, it could be ambiguous. Make sure you’re comparing apples with apples, as it were.
• Consider whether your start and end points should be inclusive or exclusive. I’ve made the code above treat it as an inclusive lower bound and an exclusive upper bound.