Quicker (quickest?) way to get number of files in a directory with over 200,000 files

Question

I have some directories containing test data, typically over 200,000 small (~4k) files per directory.

I am using the following C# code to get the number of files in a di

Answer 1

The file system is not designed for this layout. You'll have to reorganize it (to have fewer files per folder) if you want to work on that performance problem.