How to gitignore sub-directories under parent folder?

Question

I have the following structure:

FolderA
-FolderB
--FolderB1
---FileB1
---FileB2
--FolderC
---FolderC1
----FileC1

Suppose if I am working under FolderC1 and wanted to gitignore Folder B and below contents?

Answer 1

When I give git status in the FolderC1. It shows all changes under FolderB also which I don't want

Simply add a path to git status :

cd FolderA/FolderB/FolderC
git status .

That will show you changes only from the current folder ( C ) and below.
That has nothing to do with "gitignore", which would prevent elements of other folders to be tracked.