private DAL(String serverName, String DBName) { if (DBName != null || DBName == "") { instanceDC = new DBFilmDataContext(); } else { String connectionstring = "Data Source = " + serverName + " ; Initial Catalog =" + DBName + "; Integrated Security = True"; instanceDC = new DBFilmDataContext(connectionstring); } if (!instanceDC.DatabaseExists()) // Vérifier si la DB existe { instanceDC.CreateDatabase(); // Si elle n'existe pas, on la crée } }