I have wasted many hours loading huge amounts of data into spreadsheet models, only to inadvertently click the ‘Reset’ button at the last moment, because it was the day my colleague decided to bump into my chair. Excel is not capable of undoing actions performed by a macro, making it very important to confirm whether a user meant to click a button, before performing certain operations. In this post, we will look at how to get the user’s permission before running a procedure, using the MsgBox function.
It is good practice to keep track of all the formulas you write in a PowerPivot Data Model. I suppose you’d even be required to document the formulas at work, for the audit trail. I was working on a rather large data model, and was manually copy-pasting each and every DAX formula into an Excel sheet; and updated the sheet every time I tweaked a formula. It was frankly a very annoying necessity, and I wanted to remedy the situation. Microsoft introduced the Model Object in Excel 2013, allowing users to access and control PowerPivot using VBA, but there is no straightforward means to programmatically access the Excel 2010 add-in. In this post, I describe a quick way to list all the DAX formulas in your PowerPivot for Excel 2010 Data model.
There are two collections in Excel-VBA that lets the user access sheets in a workbook: the Sheets collection and the Worksheets collection. You can use these collections interchangeably in most situations, but they were each created for a specific purpose. Read on if you’d like to know more about why Microsoft created those two collections and their purpose.
I believe I owe you an explanation; about this post’s title. At first, you might think I am a pompous prick, branding my work myself as First Class. This Progress Bar was my first project after I learned how to set up class modules: hence the name. The progress bar that I developed earlier, is one of my most visited posts, and I thought I have to reward my readers with a progress bar that is much more easier to use.
How many times have you encountered the “Numbers Stored as text” error in your data sets? It interferes with your lookups and Match functions, and arithmetic calculations. Excel has a Convert to Number functionality to help with this situation, but it could be a lot better. You have to deal with your columns one at a time, sometimes one cell at a time. Also, I noticed that if the dataset is huge, excel takes a lot of time to push through; occasionally, it is so slow that you can see the cells getting updated one by one.
I recently published a post about automatically formatting a table in Excel using VBA. That got me thinking, how awesome it would be, if we could format all the tables in a sheet, with a single click. For that idea to work, we need to get all the used areas in a worksheet; and then use the Areas Collection to loop through the tables. We can access the Areas Collection through the Areas property of the Range object.
Excel Tables make analyzing data, a breeze. It surprises me that it is not used as often as it should. It automatically “includes” new data you add to your spreadsheets, it automatically drags down formulas for you, it automatically formats the tables for you. In addition to that, you can use structured references that make your formulas tractable without having to name each range. You can also link an Excel Table to your PowerPivot Model. For a comprehensive, yet concise list of stuff excel tables can do, I recommend reading through this page.
In one of my posts, I wrote about the UsedRange property of the Worksheet object. I use it in almost all of my spreadsheet applications. Excel keeps track of the last cell you used during your current session, and uses it to determine the used range of a sheet. The last cell is the one you get to, when you press Ctrl+End.
Hiding a bunch of rows and columns in a sheet before showing it to your boss is inevitable. I insert blank rows and columns around a table, so I can use the CurrentRegion property of the Range Object in my code. I add labels to all my named ranges in the sheet. I split out complex formulas into a couple of columns. Ultimately I end up with a lot of rows and columns to hide. I desperately needed a framework to hide and un-hide rows and columns in all my sheets. I experimented with a lot of methods before settling down with one and I would definitely like to know if you have a better way to do it.
Error handling is an important aspect of programming in VBA, especially if you are writing macros for other users. Unfortunately, many users ignore it completely. Visual Basics is an amazing programming language, but it lags far behind in the error handling department. All we have is the “On Error”, “Goto” and the “Resume” statements. These statements allow only a few error handling structures, and each of the structures has its own set of expert proponents. In this post, I am going to share with you, a little block of code that I use to handle errors in all my spreadsheet applications; and hopefully offer a fresh perspective.