Find in files feature

[maxmontgmx]

Hi all,
I would like to add the usefull feature "find in files" in my IDE app.
I know that it already exists a package https://github.com/Stumpii/ScintillaNET-FindReplaceDialog
But, there is no option search in all files in directory and sub directories.

Does this feature exist anywhere? or do I have to code myself?

Thanks for your help