Permission to Sub Directories - Replace all permissions

[Parker]

I currently have a routine that will set the permissions for
directories on a network storage device at a top level. I have set
the FileSystemAcces sRule with InheritanceFlag s =
InheritanceFlag s.ContainerInhe rit + InheritanceFlag s.ObjectInherit .
The permissions are set correctly, but are not being delivered down
the directory structure.

I am looking for the .NET equivalent to the windows interface that
will "Replace permission entries on all child objects with entries
shown here that apply to child objects" which can be found at the
bottom of the Advanced Security Settings of a folder.

Any help would be appreciated.