I got a custom python tool, and one of the parameters is of type "File". Also, we got users requesting drag'n drop support from Catalog, dropping multiple files into the control.
Drag and drop does not seem work on parameter type "File". However, if I change the datatype to e.g. "Raster Dataset", i get full drag 'n drop. Unfortunately I need to be able to handle random file extensions here.
I can't find any documentation on this. Is there any way to get around this ?