Expiring Today—Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

date validation

Posted on 1998-06-09
2
Medium Priority
?
210 Views
Last Modified: 2010-05-03
dear sir,

l'm doing the date validation programming, for example, if todays is april 98, then how do l know that this month is got 30,31 or just 28 days ?
0
Comment
Question by:e_aks
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 

Accepted Solution

by:
SergeD earned 90 total points
ID: 1462869
Hi,

there is no special function which returns the number of days in the month. But you can easily make a loop until the date pass to the next month.

Private Function NbDays(ByVal iMonth As Integer, _
                                     ByVal iYear As Integer) As Integer
Dim i As Integer
Dim MyDate As Date

MyDate = CDate("28/" & Format(iMonth) & "/" & Format(iYear))

' Loop for the 29, 30 and 31
For i = 1 To 4
    If Val(Format(MyDate, "mm")) > iMonth Then
        NbDays = 26 + i
        Exit Function
    End If
    MyDate = MyDate + 1
Next i

NbDays = 31

End Function

0
 
LVL 1

Expert Comment

by:mmahdi
ID: 1462870
e_aks,

You can use the following function as a General Procedure:

Public Function LastOfMonth(Optional vdatBase As Variant, Optional viOffset As Variant) As Date

       Dim datBase As Date
       Dim iOffset As Integer

              If Not IsMissing(vdatBase) Then
                      datBase = CDate(vdatBase)
              Else
                      datBase = Date
              End If


              If Not IsMissing(viOffset) Then
                      iOffset = CInt(viOffset)
              Else
                      iOffset = 0
              End If

       LastOfMonth = DateSerial(Year(datBase), Month(datBase) + iOffset + 1, 0)
End Function

to get the last day of each month try:

msgbox LastOfMonth(now) 'will return "30 June 1998"

Regards
mmahdi
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you have ever used Microsoft Word then you know that it has a good spell checker and it may have occurred to you that the ability to check spelling might be a nice piece of functionality to add to certain applications of yours. Well the code that…
This article describes how to use a set of graphical playing cards to create a Draw Poker game in Excel or VB6.
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…
Suggested Courses

719 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question