c# windows library running under Linux

Question

I have a library that was created on Windows. In the library, I try to access a file that is marked in the project as content / copy if newer. For example:

string text = File.ReadAllText(@"projectpath\testfile.txt");

This works fine on windows; however, as soon as I run it on Linux, it fails - because it's expecting:

string text = File.ReadAllText(@"projectpath/testfile.txt");

How can I make this call agnostic of platform, or sensitive to it (so I can maybe put a #if check in)?

Answer 1

Just use / - it works fine on Windows and other platforms:

 string text = File.ReadAllText(@"projectpath/testfile.txt");