static void Main(string[] args) { //Create a new droid collection and set the size of it to 100. IDroidCollection droidCollection = new DroidCollection(100); //Create a user interface and pass the droidCollection into it as a dependency UserInterface userInterface = new UserInterface(droidCollection); //Display the main greeting for the program userInterface.DisplayGreeting(); //Display the main menu for the program userInterface.DisplayMainMenu(); //Get the choice that the user makes int choice = userInterface.GetMenuChoice(); //While the choice is not equal to 3, continue to do work with the program while (choice != 5) { //Test which choice was made switch (choice) { //Choose to create a droid case 1: userInterface.CreateDroid(); break; //Choose to Print the droid case 2: userInterface.PrintDroidList(); break; case 3: userInterface.PrintDroidListbyModel(); break; case 4: droidCollection.SortbyTotalCost(); userInterface.PrintDroidList(); break; } //Re-display the menu, and re-prompt for the choice userInterface.DisplayMainMenu(); choice = userInterface.GetMenuChoice(); } Console.ReadLine(); }