VSTACK and HSTACK are dynamic array functions, meaning the result spills from the cell in which you type the formula, and any changes to the data in the source arrays are reflected in the stacked ...

Excel formulas are powerful, but they have their limits. I used to rely on complex nested formulas that take forever to build and are difficult to troubleshoot, but I have started leaning more heavily ...

Excel-DNA - see http://excel-dna.net - is an independent project to integrate .NET with Excel. With Excel-DNA you can make native (.xll) add-ins for Excel using C# ...

Traitor! was born out of years of telling customers that storing passwords in Excel spreadsheets, password-protected or otherwise, isn't a great idea. After some casual remarks about how it was ...