Visual Basic 2005 in a Nutshell, Third Edition

226

|

Chapter 12: The Language Reference

This is the Title of the Book, eMatter Edition

Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

If omitted,

Jan1 is used.

Description

The DatePart function returns an individual component of the date or time (such as

the month or the second) from a date or time value.

Usage at a Glance

• DatePart replicates the functionality of the distinct Year, Month, Day, Hour, Minute,

and

Second functions.

• You can check that a date expression is valid using the IsDate function.

Version Differences

• VB 6 lacks the DateInterval enumeration and therefore only accepts a string as the

interval argument.

• VB 6 supports a number of constants beginning with vb... (such as vbSunday)as

values for the

firstDayOfWeekValue and firstWeekOfYearValue arguments. While

these are still supported in .NET, the new FirstDayOfWeek and FirstWeekOfYear

enumerations are preferred.

See Also

DateSerial Function, DateString Property, DateValue Function

DateSerial Function

Class

Microsoft.VisualBasic.DateAndTime

Syntax

Dim result As Date = DateSerial(year, month, day)

year (required; Integer)

The year, a number between 1 and 9999, inclusive

month (required; Integer)

The month, a number between 1 and 12, inclusive

day (required; Integer)

The day, a number between 1 and 31, inclusive

Description

The DateSerial function returns a Date with the value that is specified by the three

date components.