Open pdf file from filename in listbox

Hi all,
I am new here, but i need really your help.

I created a sheet with lots of filenames from pdf files in a table. All the pdf files are saved in the same folder on a network drive or on the windows machine. Now i created a userform with textbox and listbox, loading columns with rowsource to the listbox, filtered by the keyword in the textbox. This works very well.

But now the problem: I need to open the pdf files with associated pdf viewer by doubleclick on the filtered file in the listbox. Should be possible by adobe reader on some windows machine.

Could you please help me with this?
Thanks alot