public static Osoba ParseFromFile(string line)
        {
            if (line == null)
            {
                return(null);
            }
            //Ivan|Popovic|4|10|123|2|019321321|[email protected]&2&3%[email protected]&2&4

            string[] lajnaO = line.Split(DELIMITER);

            Osoba osoba = new Osoba
            {
                Ime      = lajnaO[0],
                Prezime  = lajnaO[1],
                GradID   = int.Parse(lajnaO[2]),
                IDOsoba  = int.Parse(lajnaO[3]),
                Sifra    = lajnaO[4],
                StatusID = int.Parse(lajnaO[5]),
                Telefon  = lajnaO[6]
            };
            List <Email> mailovi = new List <Email>();

            string[] lajnaMajlovi = lajnaO[7].Split(EMAIL_DELIMITER);
            foreach (string mail in lajnaMajlovi)
            {
                if (!string.IsNullOrEmpty(mail))
                {
                    mailovi.Add(MailKonverter.FormatFromFile(mail));
                }
            }
            osoba.Email = mailovi;
            return(osoba);
        }
        public static string ParseForFile(Osoba o)
        {
            IEnumerable <string> emailsForFile = o.Email.Select(email => MailKonverter.FormatForFile(email));
            string emails = string.Join(EMAIL_DELIMITER.ToString(), emailsForFile);

            return(string.Join(DELIMITER.ToString(), o.Ime, o.Prezime, o.GradID, o.IDOsoba, o.Sifra, o.StatusID, o.Telefon, emails));
        }