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Calculation for leap year?
Posted on 2007-11-19
I am currently trying to calculate if a year is a leap year or not. arrYear(i) would be just a input for the year..
So, I entered the year 2008 and it return a false. What gives?
So, I entered the year 2008 and it return a false. What gives?
Dim blnLeapYear As Boolean = ((arrYear(i) Mod 4 = 0) And (arrYear(i) Mod 100 = 0)) Or (arrYear(i) Mod 400 = 0)
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Hi, there's a built-in function that does that for you:
Dim blnLeapYear As Boolean = DateTime.IsLeapYear(arrYear(i))
Dim blnLeapYear As Boolean = ((arrYear(i) Mod 4 = 0) And (arrYear(i) Mod 100 <> 0)) Or (arrYear(i) Mod 400 = 0)
Thank you both so much!
For some reason the built-in function returns an error:
Year must be between 1 and 9999.
Parameter name: year
However the 2nd one works great. I must have done the 1st one wrong somehow. Just fyi, I get the value from a dropdownlist using something like ddlYear1.SelectedItem.Valu
For some reason the built-in function returns an error:
Year must be between 1 and 9999.
Parameter name: year
However the 2nd one works great. I must have done the 1st one wrong somehow. Just fyi, I get the value from a dropdownlist using something like ddlYear1.SelectedItem.Valu
Well as the error says you're sending a number that is either lower than 1 or higher than 9999, maybe you got a null or empty value in your DropDownList?, it's always good to add validations so that exceptions like that are not raised.
That's weird because after the value has been retrieved, the 2nd one work for me but the first one didn't. I also made sure the value has been converted of type Integer first. There are only 3 year values as well. No idea what happened there. Ah well, it works out in the end anyway. Choices are good!
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