Question

How to get Calendar dates from a given date

Asked by: BeckyBair

I appologize if I put this in the wrong zone, I couldn't find VB6...

I need to get Calendar dates (with Time) from a given date.  Example of what I mean is:

Week - the next Monday not 7 days from date
Month - the 1st day of the next month not 30 days from date
Quarter - the 1st day of the first month in the next quarter
Year - January 1st of next year

I believe I have figured out the Week, Month, and Year ones but am having difficulty with the Quarter one.

More examples for quarter would be:  given date is Today (08/11/2009 08:30:40) - User chooses 3 QTRs from now would be:  April 1st next year (same time of 08:30:40) - if I counted my quarters correctly :).

I have attached the code I have so far...  
Also, if the weeks, months and year can be done easier then let me know.

Private Sub Command4_Click()
   Dim sResult As String
   Dim sDate   As String
   
   Dim i       As Integer
   Dim iWeek   As Integer
   Dim iMonth  As Integer
   Dim iQuarter As Integer
   Dim iYear   As Integer
   
   Text3.Text = Now
   sDate = Text3.Text
   
   iWeek = Combo2.Text * 7 + 2
   iMonth = Combo2.Text
   iQuarter = Combo2.Text
   iYear = Combo2.Text
   
   Select Case Combo1.Text
      Case "Week(s)"
         sResult = DateAdd("d", -Weekday(sDate) + iWeek, sDate)
   
      Case "Month(s)"
         sResult = DateSerial(Year(sDate), Month(sDate) + iMonth, 1)
   
      Case "Quarter(s)"
         sResult = DateSerial(Year(sDate), Month(sDate) + iMonth, 1)
   
      Case "Year(s)"
         sResult = DateSerial(Year(sDate) + iYear, 1, 1)
   
   End Select
   
   Text2.Text = sResult
End Sub
                                  
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:

Select allOpen in new window

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2009-08-11 at 08:29:19ID24643493
Tags

vb6

,

dates

Topics

.Net Editors & IDEs

,

Visual Basic Programming

Participating Experts
1
Points
250
Comments
4

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. Calendar
    Hi, I'm looking for a script that would show a monthly calendar on the screen and when the user would pick a date from it, it would insert that same date in a field in the following format: dd-mmm-yyyy. Thanks!
  2. calendar
    hi experts i need a calendar in my visual form. i've tried to put monthview and calendar components. all my regional settings in Turkish. but when i put monthview i see the dates in turkish but when i put calendar it is always english. why? is there a solution? thanks..

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: HooKooDooKuPosted on 2009-08-11 at 11:30:39ID: 25071901

Well, you've already got a good start utilizing the functions DateSerial, Year, Month, and Weekday.
The only thing that seems to be missing is tryig to find that "start" of a quarter to then add 3 months multiplied by the number of quarters you want.

Try something like this...
sResult = DateSerial( Year(sDate), 1 + 3 * iQuarter + 3 * ((Month(sDate) - 1) / 3 ), 1)

The idea is that "(Month(sDate) - 1)/3" gives you a number from 0 to 3 (0 for 1st quarter, 3 for 4th quarter).  Multiply that result by 3 and add 1 to get the 1st month of the quarter of sDate.  Then just add three months for each quarter desired.

 

by: BeckyBairPosted on 2009-08-11 at 13:14:10ID: 25072860

Would this give me the Calendar Quarter (ie, January 1st, April 1st, July 1st or October 1st)?  

Example:  date given is Today (08/11/2009 08:30:40)

Combo2.text = 2  
Combo1.text = Quarter

Result should = 01/01/2010 08:30:40

Example2:  date given is Today (08/11/2009 08:30:40)

Combo2.text = 3  
Combo1.text = Quarter

Result should = 04/01/2010 08:30:40

I hope that helps explain better...


 

by: HooKooDooKuPosted on 2009-08-11 at 13:39:25ID: 25073175

With the exception of the time portion (which seems to be missing from even your example), I believe the formula above gives you what you want.  I didn't run an actual code test, but here's the math...

Take today's month (1 to 12), subtract one month (0 to 11) and divide by 3.  So...
month 1 to 3 => 0, month 4 to 6 => 1, month 7 to 9 => 2, and month 10 to 12 => 3.

Multiply the result by 3 and add a month
month 1 to 3 => 1, month 4 to 6 =>4, month 7 to 9 => 7, and month 10 to 12 => 10

At that point, you now have the 1st month of the quarter of the original day.  Now all you have to do is add three months for each quarter you want to advance.

HOWEVER, one very important thing is missing from at LEAST the Month and Quarter Calculations... and thats considering year roll over.  In other words, if you start with today being month 12 (December) and then add a month, the result is 13.  Well using 13 for a Month value in DateSerial is going to blow chunks.

So for ALL of your calculations, what I thing you need to do is add the variables...
Dim mm as integer 'For Month
Dim dd as integer 'For Day
Dim yy as integer 'For Year
and seperate the process of calcuating month, day, year values from building the date with DateSerial.
Basically, use the Select Case logic above to fillin these three variables (of course dd is going to just be 1 for all these cases, so it could be skipped).  Then, after the Select Case statement, update these three variables to accout for rollover (month looks like the only one you would have to do)...

if mm > 12 then
  yy = yy + mm \ 12 'Integer division, remainder is dropped
  mm = mm mod 12
  if mm = 0 then
    mm = 12
  end if
end if

Then once you've accounted for rollover, then use DateSerial...
sResult = DateSerial( yy, mm, dd )

 

by: BeckyBairPosted on 2009-08-11 at 14:19:58ID: 31614268

Thank you so much for your help and explaining it in detail for me

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...