learn.microsoft.com
Excel Custom Functions Overview
Microsoft Learn overview for creating custom worksheet functions in Excel add-ins.
- Sites
- Free
What it is
When Excel's built-in function library doesn't cover a specialized calculation, custom functions let developers define their own. This Microsoft Learn overview explains how custom functions work within the add-in framework, how to declare them in a metadata JSON file, handle asynchronous data fetches, stream live values into cells, and debug function logic during development.
At a glance
- Source
- learn.microsoft.com
- Category
- Official Microsoft
- Cost
- Free
