Different date between two dates : Date Functions « Date Time « VB.Net Tutorial

public class Test
   public Shared Sub Main

        Dim dteExpiration As Date

        Dim lngDays As Long
        lngDays = DateDiff(DateInterval.Day, #12/31/2000#, Now())

   End Sub
End class

5.3.Date Functions
5.3.1.DateAdd: add two date together
5.3.2.Weekday Function
5.3.3.Call to WeekdayName combined with call to Weekday
5.3.4.Determining the weekday of a date
5.3.5.CDate: convert string(8/1/86) to date
5.3.6.CDate: convert string(Tuesday, September 16, 1845 6:45pm) to Date
5.3.7.CDate: convert string(15 July, 1215) to Date
5.3.8.Assign Now() to a date variable
5.3.9.Different date between two dates
5.3.11.Calls GetDaysInMonth for the second month in each of five years in each era.
5.3.12.Call IsLeapMonth() for all the months
5.3.13.The FirstDayOfWeek used for the en-US culture
5.3.14.Current week in current year
5.3.15.Call IsLeapMonth for all the months in five years in the current era.