Hello Joseph,
May be I’m totally wrong, but are you talking about the Search - Find in Files… option ( CTRL + SHIFT + F ) of Notepad++ ?
Once this Find in Files windows is opened :
Just choose the expression to search for, the search mode, and some other options
Choose the directory where to search, and, possibly, in all its sub-folders, too
You may also choose one, or more, filter(s), as, for instance, *.xml , abc*.txt
And, as soon as you click on the Find All button, the Find result window is displayed, at bottom of the screen, with all the lines, of all the files, accordingly to the chosen directory and filter(s), containing the search string or regex !
Then, in the Find result dialog, just click on any line to open this specific file, in N++, at the location of the search string. You may also right-click, in the Find result dialog, and choose the option Open all !
Best Regards,
Guy038
