MIGX: Export from TV to CSV (not MIGXdb)

I’m looking for a solution to export MIGX values from a MIGX TV (config) of a resource to a CSV file.
Ideal if there was an actionbutton on top of the grid to export it in a one-click action.

Are there any hints or solutions available?

I don’t see a built-in option for this.

But it’s possible to add your own custom actionbuttons (and processors).
You could for example add a custom handler based on this.csvExport.
And then create a custom processor based on export.php (or maybe exportcsv.php) and either submit the data via the AJAX-request or load it from the database in the processor.