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I have extensive experience with VBA programming in Excel 5 through Excel 2013. As a former aerospace engineer with a large aerospace corporation and consultant in a small defense technology services company, I have developed a wide range of applications in VBA, including simulations involving mixed-language programming, satellite orbit mechanics, graphics and animation, and real-time applications. I am interested in moderate to hard VBA-related questions only.

Experience in the area

I have developed and taught several courses in Excel VBA programming and also VBA programming in Office 97, 2000, and 2007. I have developed a number of large technical applications in Excel VBA for use within the aerospace industry.


B.S. in Electrical Engineering and Computer Science, University of California, Berkeley.

What do you like about this subject?

I enjoy helping others, not just to solve their particular problem, but also to improve their proficiency and understanding of Excel and VBA. As a result, I always try to explain why a particular problem has occurred and why a particular solution works rather than just providing a solution.

Something interesting about this subject that others may not know:

VBA is a powerful general-purpose scripting language, not just a macro recording capability. When one learns to program in VBA rather than just recording macros, a whole world of new capabilities opens up.

Something controversial or provocative about this subject

Contrary to the belief of many, VBA is exactly the same in Microsoft Excel, PowerPoint, Word, and Access. It is only the object models of the hosting applications, and therefore the way one works with their objects, that are different. As a result, once one knows VBA one need only learn the object model of any new application to program effectively in it.

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Ayman 01/04/17101010Thank you Damon for providing excellent Macro .....
Joe12/21/16101010Thanks a lot Joseph

Recent Answers from Damon Ostrander

2017-03-07 How to upload a desired picture into a database:

Hi  Terrill,    A dialog for selecting a file is provided by the VBA GetOpenFilename method.  You can use it like this:       Dim Filename As String          Filename = Application.GetOpenFilename("Picture

2017-01-11 Chart appearance.:

Hi again Richard,    Here is some information about installing that Compatibility Pack:    https://support.microsoft.com/en-us/kb/923505    Regarding other ideas one suggestion would be to save your charts

2017-01-10 Weird printer problem:

Hi Bill,    This is a widely reported problem with Excel.  I found a website that claims it can be fixed using a downloadable repair tool.  See this link:    http://thewikipost.org/topic/98ybhSiaHyCVjR2PNjCAN8V2gQhPCvV0/Applications-with-

2017-01-08 Chart appearance.:

Hi again Richard,    I'm sorry my suggestion didn't work for you.  I am using Office 365 and Excel v. 15.  I haven't used Excel 2003 in several years and no longer have access to that version, but was

2017-01-05 Chart appearance.:

Hi Richard,    Sorry it took me so long to get back to you on this.     I believe the problem is that the default in Excel is to save chart pictures in GIF format, which is bad for representing fonts as


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This topic answers questions related to Microsoft Excel spreadsheet (or workbook) stand-alone or Mircrosoft Office Excel including Excel 2003, Excel 2007, Office 2000, and Office XP. You can get Excel help on Excel formulas(or functions), Excell macros, charting in Excel, advanced features, and the general use of Excel. This does not provide a general Excel tutorial nor the basics of using a spreadsheet. It provides specific answers to using Microsoft Excel only. If you do not see your Excel question answered in this area then please ask an Excel question here


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