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- Enumerations (2)
- Loops and conditions (2)
- Errors and debugging (2)
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Blogs from Wise Owl on General in VBA macros
Showing blogs 1-15 (out of 15)
How to have fun pixellating and reconstructing images in VBA
Posted by Andy Brown on 25 August 2020
You can have great fun taking your favourite image (a picture of your loved one?) and pixellating it in VBA. The results are stored as RGB numbers in a workbook - what you do with them then is up to you!
Should you use JavaScript or VBA to program in Excel?
Posted by Andy Brown on 28 June 2020
Is JavaScript for Office (also known as OFFICE-JS) the next big thing? Unless you're a full-time web developer, emphatically no - this blog gives 3 reasons why you should continue to write your Office programs in humble VBA.
Use VBA to create Microsoft Team meetings
Posted by Sam Lowrie on 26 June 2020
Did you know that you can create Microsoft Team meetings using VBA in Outlook? This blog shows you how!
Talking to Excel to fill in your input forms, using speech recognition and VBA
Posted by Andy Brown on 13 March 2020
What happens when you combine the magic of speech recognition with the power of VBA? A user form which you can fill in without a keyboard!
Announcing the first Wise Owl online training course (Excel VBA)
Posted by Andy Brown on 10 January 2020
After a huge investment of time and expertise, we're proud to announce that our first full online training course is now live on our website! The course shows you how to program in VBA in Excel, and is completely free (you don't even have to log in to follow it).
Problems with the Application.ScreenUpdating = False command in VBA
Posted by Andy Brown on 17 June 2019
Some people are experiencing problems when trying to suppress screen updates while macros are running in Excel VBA, under Windows 10. This blog gives one possible solution.
Disabling Screen Updates in Excel VBA
Posted by Andrew Gould on 26 November 2015
You can give your VBA code a performance boost by simply turning off screen updating while your code runs. This blog explains how to achieve this and how to create a basic timer to test the results.
How to create autoshapes, lines and connectors in VBA macros
Posted by Andy Brown on 25 January 2014
You can use Visual Basic within Excel, PowerPoint or Word to draw shapes, format them and even assign macros to run - this long blog gives lots of ideas of how to proceed!
How to Delete Digital Certificates from your Computer
Posted by Andrew Gould on 06 March 2012
Creating a digital certificate for your VBA projects is easy, but deleting them is somewhat less obvious. This blog shows you how to use the certificate manager to remove certificates that you no longer need.
Writing recursive programs in VBA
Posted by Andy Brown on 20 February 2012
In certain cases in VBA (displaying the contents of folders, listing hierarchical data) writing a program which calls itself is by far the easiest way to go - this blog gives worked examples of 3 such recursive programs.
Collections, objects, methods and properties in Excel VBA
Posted by Andy Brown on 09 November 2011
Visual Basic for Applications (VBA) is what's called an object-orientated programming language. This blog explains what this means!
Posted by Andy Brown on 16 August 2011
As well as running introductory and advanced VBA training courses in the UK for small groups, we've also published this online training course teaching how to code macros using Visual Basic for Applications (VBA) within Excel. The tutorial covers everything from basic recording through to creating classes - something for everyone!
Introduction to Visual Basic for Applications (VBA)
Posted by Andrew Gould on 01 July 2011
If you've heard people in your office talking about macros or VBA but don't understand what they mean, this blog series will make everything clear. It's an introduction to the most basic skills you'll need to start creating your own programs in any of the Microsoft Office applications.
Using sheet codenames in Microsoft Excel VBA
Posted by Michael Allsop on 01 June 2011
Do your macros keep falling over due to users renaming their worksheets in Excel? Read this article to find out if sheet codenames could be the solution you need.
Posted by Andy Brown on 28 April 2011
Commenting code is an art form! This series of blogs explains why, how and when to comment in VBA.
Dear Andrew et al I have been studying and enjoying your amazing videos for quite a while a while. I managed to (1). Create a payment system with vba code with application inputbox (2). I created vba code to review the payment system in (1) to ensure accuracy of date entry.
The first problem I have now is that when I run the review code and if no change was made to the payment entry in (2), the original entry are being changed to either '£0' or 'false' I have been scouting through the internet for solution to no avail. Please what vba code to write so that the original entry is not changed if no change is made at the review code stage?
The second problem I have is with the following code:
ActiveCell.Value = PaymentAddress
Worksheets("PCN Form").Select
For Each Cell In Selection
Do
If ActiveCell = "" Then Exit Do
Cell.Value = UCase(Cell.Value)
On Error GoTo 0
Exit Sub
Loop
Next Cell
Application.DisplayAlerts = True
Application.ScreenUpdating = True
On Error GoTo 0
End Sub
When I place this code at the begining or middle or procedure, it stops after running without completing other procedures. I have therefore being constrained to put this procedure at the end. Otherwise, would prefer to bring it in the middle.
The third problem I have is how to write a vba code to validate a payment_reference to contain alphanumeric and also not more than 10 digits.
Can't thank you enough for your amazing videos. Keep us tuned! Kindest regards Zeno
Hi Zeno,
Thanks for your comments and questions. Your first question is difficult to answer as you haven't shown the code that you've written. I'd suggest using an IF statement to check whether the new value is different to the old value and only write changes to the cell if that is true.
For your second question I have to admit that it's quite difficult to work out what it is you're trying to do! Some of the code you've written, particularly the Do Loop and Exit Sub statements, appear to be unnecessary. If you're simply trying to change the value of a single cell to upper case text then the only line that you need would be something like this:
ActiveCell.Value = UCase(ActiveCell.Value)
For your third question you'll need to know a little about manipulating strings. Fortunately, we have a few videos on this topic. You may find these ones useful:
https://www.wiseowl.co.uk/vba-macros/videos/vba-functions/working-with-strings/
https://www.wiseowl.co.uk/vba-macros/videos/vba-functions/asc-chr-functions/
I hope that helps!