string[] tabIPAdress = IPAddress.Split(","c);
String[] listeAdresses = System.Configuration.ConfigurationManager.AppSettings["IPAddress"].Split(','); ddIP.Items.AddRange(listeAdresses);
String[] listeAdresses = System.Configuration.ConfigurationManager.AppSettings["IPAddress"].Split(','); foreach (string ip in listeAdresses) { ddIP.Items.Add(ip); }