I’m new to Excel Web Add-Ins and want to figure out if it’s possible to make an add-in that can export a custom file.
I’ve looked around and all I find are Excel specific commands like Workbook.SaveAs() but I can’t find anything on making custom export functions. I need to convert the file into XML but a specific XML setup and so, I could just work the data before I save it to XML. But again, can’t find much of anything to suggest that this is supported.
How would I go about writing a file to disk from Excel that isn’t just the Workbook?
There’s no such API to support exporting custom file to disk. It seems we can have workaround to do this work, this workaround just works for excel online.
Please see this link:
How to create a file in memory for user to download, but not through server?