Question

I want to know that Filename1, provided by the user is the same as stored in DB (Filename2).

I was about to use

string.Equals(Filename1, Filename2, StringComparison.CurrentCultureIgnoreCase)

but then I doubted whether I should use StringComparison.InvariantCultureIgnoreCase.

Obviously, I need to do this the same way OS does, or use appropriate API.

In some cultures, AFAIK, characters (e.g. vocals) may change if the next one is Capitalized.

As I primarily target English-speaking market, I’d like my software to work well throughout the world.

Answer 1

To quote Michael Kaplan:

If you are trying to compare symbolic identifiers or operating system objects like filenames or named pipes, use an Ordinal type method (or an OrdinalIgnoreCase type method).

In other words, use StringComparison.OrdinalIgnoreCase as the argument to string.Equals to mimic the Windows file system.