private void BoutonRechercher_Click(object sender, RoutedEventArgs e)
        {
            BLL.BLL BLL_RESEARCH_CONTACT = new BLL.BLL();

            List <string[]> mesContact_trouver = BLL_RESEARCH_CONTACT.searchContact(phoneARechercher.Text);

            if (mesContact_trouver != null && mesContact_trouver.Count > 0)
            {
                string firstNames      = "";
                string secondNames     = "";
                string emails          = "";
                string phones          = "";
                string ages            = "";
                int    nbrContactFound = 0;

                foreach (string[] maListContact in mesContact_trouver)
                {
                    firstNames  += maListContact[0] + "\n";
                    secondNames += maListContact[1] + "\n";
                    emails      += maListContact[2] + "\n";
                    phones      += maListContact[3] + "\n";
                    ages        += maListContact[4] + "\n";

                    nbrContactFound++;
                }
                listFirstNameFound.Text  = firstNames;
                listSecondNameFound.Text = secondNames;
                listEmailFound.Text      = emails;
                listPhoneFound.Text      = phones;
                listAgeFound.Text        = ages;
                messageRecherche.Text    = nbrContactFound + " contact(s) found";
            }
            else
            {
                listFirstNameFound.Text  = "";
                listSecondNameFound.Text = "";
                listEmailFound.Text      = "";
                listPhoneFound.Text      = "";
                listAgeFound.Text        = "";
                messageRecherche.Text    = "No contact found";
            }
        }