Cross-platform file name handling in .NET Core

Question

How to handle file name in System.IO classes in a cross-platform manner to make it work on Windows and Linux?

For example, I write this code that works perfectly on Windows, however it doesn't create a file on Ubuntu Linux:

var tempFilename = $@"..\Data\uploads\{filename}"; using (FileStream fs = System.IO.File.Create(tempFilename)) {     file.CopyTo(fs);     fs.Flush();                     } 

Answer 1

You can also use Path.DirectorySeparatorChar as below:

 Console.WriteLine("..{0}Data{0}uploads{0}{{filename}}", Path.DirectorySeparatorChar); 

Reference: MSDN