源 码:
Function Age(varBirthDate As Variant) As Integer
Dim varAge As Variant
If IsNull(varBirthDate) Then Age = 0: Exit Function
varAge = DateDiff("yyyy", varBirthDate, Now)
If Date < DateSerial(Year(Now), Month(varBirthDate), _
Day(varBirthDate)) Then
varAge = varAge - 1
End If
Age = CInt(varAge)
End Function