Question

which one is better to use and why?
I mean in which aspects these two commands differ and how?
Performance, readability, …

new FileInfo(path).Name or Path.GetFileName(path)

Answer 1

Simply as you won’t have to Create a new Object for using Path.GetFilename() it will perform better.

Here is a Comparison for both:

Code:

Path.GetFileName("G:\\u.png")

IL:

IL_0000:  ldstr       "G:\u.png"
IL_0005:  call        System.IO.Path.GetFileName

Code:

new FileInfo("G:\\u.png").Name

IL:

IL_0000:  ldstr       "G:\u.png"
IL_0005:  newobj      System.IO.FileInfo..ctor
IL_000A:  callvirt    System.IO.FileSystemInfo.get_Name