static void Main(string[] args) { IComponent <string> album = new Composite <string>("Album"); IComponent <string> point = album; string[] s; string command; string parameter; StreamReader instream = new StreamReader("Composite.dat"); do { string t = instream.ReadLine(); Console.WriteLine("\t\t\t\t" + t); s = t.Split(); command = s[0]; if (s.Length > 1) { parameter = s[1]; } else { parameter = null; } switch (command) { case "AddSet": IComponent <string> c = new Composite <string>(parameter); point.Add(c); point = c; break; case "AddPhoto": point.Add(new Component <string>(parameter)); break; case "Remove": point = point.Remove(parameter); break; case "Find": point = album.Find(parameter); break; case "Dysplay": Console.WriteLine(album.Display(0)); break; case "Quit": break; } }while (!command.Equals("Quit")); Console.WriteLine("Application complete"); Console.ReadKey(); }