[C#] Dosya ve klasör yeniden isimlendirme (gelişmiş)

        internal static void RenameFile(string filedirandname, string newfilename)
        {
            System.IO.File.Move(filedirandname, System.IO.Path.GetDirectoryName(filedirandname) + "\\" + newfilename + System.IO.Path.GetExtension(filedirandname));
        }

RenameFile(@"C:\Users\Muhammet\Desktop\Yeni Metin Belgesi.txt", "dosya yeni ismi");

        internal static void RenamerDir(string olddirandname, string newdirname)
        {
            System.IO.Directory.Move(olddirandname, System.IO.Path.GetDirectoryName(olddirandname) + "\\" + newdirname);
        }

RenamerDir(@"C:\Users\Muhammet\Desktop\Yeni klasör", "new dir name");