static void Main(string[] args) { appSettings.PathBdd = "Documents/BaseDeDonnée.txt"; Receiver receiver = new Receiver(appSettings.PathBdd); ConcreteCommand cmd = new ConcreteCommand(receiver); Student s1 = new Student("Nam", "Nguyen", 24, "4AMOC"); Student s2 = new Student("Thomas", "Pain", 45, "4AMOC"); cmd.BeginTransaction(); cmd.AddStudent(s1); cmd.AddStudent(s2); }