Friday, 25 May 2007

Check For Leap Year in VB.Net

When dealing with dates in VB.NET, it's a good idea not to perform manual checks or calculations, which may be inaccurate depending on the quality of the code. Instead, it's advisable to rely on the functionality of classes provided by .NET.

For instance, if you need to determine if a given year is a leap year, you can use VB.NET's IsLeapYear function. Here's an example of how you can use the function:

Private Sub LeapYearCheck()
Dim bLeapYear AsBoolean
bLeapYear = Date.IsLeapYear(Now.Year)
MessageBox.Show(bLeapYear)
bLeapYear = Date.IsLeapYear(2004)
MessageBox.Show(bLeapYear)
End Sub


In the example, we define a Boolean variable, bLeapYear, to hold the result of whether a given year is a leap year. we then set the value of bLeapYear to the IsLeapYear property of the Date class and pass to it the current year, which we obtain using the Year property of the Now class. We show the value of bLeapYear in a MessageBox. The result is False because 2007 is not a leap year. After that,we follow the same steps for 2004, which is a leap year. In that case, MessageBox shows True.


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