c# - DirectoryNotFoundException - Could Not Find Part of the Path -

i have console application built myself rename .mp3 files download. application has worked flawlessly quite few months, of sudden tossing titled exception @ me 1 particular directory. not 1 directory, happening on select number of files - 3 of them renamed.

here directory path , files:

here snippet of directory path exception thrown, along exception's message:

and here code:

static void main(string[] args) {     string dir = @"m:\temp downloading folder";      var files = new directoryinfo(dir + @"\gregory alan isakov discography [2005 - 2013]\rust colored stones").getfiles("*.mp3").tolist();      foreach (var item in files) {         if (item.name.substring(0, 2).all(char.isdigit)) {             //string fullname = item.fullname.replace("\\", "/");             string newname = "gregory alan isakov ";             //exception thrown here             file.move(item.fullname, item.fullname.replace(item.name.substring(0, 3), newname));         }     }     console.writeline("done!");     console.readkey(); } 

i tried changing path have / instead of \\ same result.

according documentation on msdn:

the exception thrown when part of file or directory cannot found.

however, directory is found , correctly renamed first 3 files (as depicted in first image).

can explain me why happening?

you have bug in code changes folder instead of name of file, running code:

c:\temp downloading folder\gregory alan isakov discography [2005 - 2013]\rust colored stones\05 - ghosts.mp3

is changed to:

c:\temp downloading folder\gregory alan isakov discography [20gregory alan isakov - 2013]\rust colored stones\gregory alan isakov - ghosts.mp3

i let debug , fix yourself.