Learn why the Excel AGGREGATE function fails with arrays and how to fix value errors using helper columns or dynamic LAMBDA and BYROW formulas.

EPPlus includes a powerful, built-in formula calculation engine — no Excel installation required. It evaluates formulas entirely in .NET and covers the vast majority of real-world spreadsheet ...

If the UNIQUE function isn’t working in Microsoft Excel on your Windows 11/10 PC, read this post to learn how to fix the issue. The UNIQUE function extracts a list of distinct (non-duplicate) values ...

Q. I get a detailed revenue transaction export from the client, and then I get it again, revised, usually after I’ve already filtered, sorted, and documented my selections. I’m tired of reapplying ...

Array constants in Microsoft Excel are powerful tools for performing multiple calculations with a single formula. Using array constants in your Excel worksheets avoids the need for lengthy or repeated ...

Excel is a cornerstone tool for data analysis, management, and automation, offering a wide array of functions that simplify even the most complex tasks. Whether you’re a beginner or a seasoned user, ...

The formula parser has changed significantly in EPPlus 7, requiring all custom functions that are inherited from the ExcelFunction class to be reviewed. The ExcelFunction class has changed, now ...