I'm using CL_GUI_FRONTEND_SERVICES=>FILE_OPEN_DIALOG to replace WS_FILENAME_GET which is an obsolete function module in ECC6.
WS_FILENAME_GET was making use of the file mask -
',.csv ,.csv ,.txt ,.txt.'
When I use the same string in the file_filter parameter of FILE_OPEN_DIALOG, it doesn't work.
Can somebody tell me the correct string format? I would like *.csv & *.txt as the file mask in the open dialog.