コード例 #1
0
        /// <summary>
        /// Displays a menu and get a valid numeric response from the user.
        /// </summary>
        /// <returns>An integer representing the menu choice the user chose.</returns>
        public int DisplayMenuAndGetResponse(MenuItemsSet menuItemsSet, string menuTitle)
        {
            // Print the menu's title
            Console.WriteLine();
            Console.WriteLine(menuTitle);
            Console.WriteLine();

            // (Used to write the menu number. Will be incremented in each pass through the upcoming loop.)
            int currentMenuNumber = 1;

            // Print off each menu item in the menu items set. Write the number before each one and increment for every time you print a menu item.
            foreach (string menuItem in menuItemsSet.MenuItems)
            {
                Console.WriteLine(currentMenuNumber + ". " + menuItem);
                currentMenuNumber++;
            }

            // (This while loop will exit on a return statement)
            while (true)
            {
                // (Used to store the converted numeric user input)
                int numericValidUserInput;

                // Prompt for a menu selection
                string rawUserInput = GetStringResponse("Enter a menu option");

                // If the selection is valid [is it a number? Is that number between 1 and the last item in the list of menu items?]
                if (int.TryParse(rawUserInput, out numericValidUserInput) && numericValidUserInput >= 1 && numericValidUserInput <= menuItemsSet.MenuItems.Count)
                {
                    // We have a valid answer; return the data.
                    return numericValidUserInput;
                }
                else
                {
                    // We don't have a valid answer - display an error
                    DisplayMessage("That is not a valid option. Please make a valid choice.");
                }
            }
        }
コード例 #2
0
        /// <summary>
        /// Initializes the data that the program will be working with.
        /// </summary>
        private static void initializeData()
        {
            // TODO: This data technically has to do with the user interface, but it's specific to this program only - hence why I put it in Program.cs.
            //       The User Interface class is meant to be extremely generic so that it can be utilized more dynamically, so all specific data that
            //       only applies to this single program was written in Program.cs.

            // Object initialization
            userInterface = new UserInterface();
            beverageDatabaseHook = new BeverageZDwyerEntities();

            // Data initialization (don't have to do it here, technically, but figured might as well)
            greeting = "Welcome to the beverage database management system.";
            dontAddBeveragesWithTheSameID = true;                                   // Should we add beverages to the database that have a duplicate id?

            /* MENU ITEM SET INITIALIZATION */
            /* (MenuItemSet objects are used by the DisplayMenuAndGetResponse method in UserInterface to draw a menu) */
            /* (The MenuItemSet constructor can take a variable amount of strings with the params argument specifier I just found out about a few minutes ago lol) */

            // Main menu
            mainMenuItemsSet = new MenuItemsSet
            (
                "Print all beverages",
                "Retreive beverage by property or ID",
                "Add a new beverage",
                "Update an existing beverage",
                "Delete a beverage",
                "Exit program"
            );

            // Find item by property menu
            findItemByWhatMenuItemsSet = new MenuItemsSet
            (
                "ID",
                "Name",
                "Pack",
                "Price",
                "Active status",
                "(Back to main menu)"
            );

            // Find beverages with a price that is... menu
            priceMenuItemsSet = new MenuItemsSet
            (
                "...less than or equal to a given value",
                "...equal to a given value",
                "...more than or equal to a given value"
            );

            // Find by active status menu
            findItemByActiveStatus = new MenuItemsSet
            (
                "Is active",
                "Is not active"
            );
        }