using System;

using System.Collections.Generic;

public class Program

{

    public class Food

    {

        public string Name;

        public int    Quantity;

    }

    public static List<Food> shoppingList = new List<Food>();

​

    public static void Main()

    {

        string selection = string.Empty;

        while(selection != "6")

        {

            Console.WriteLine("1: Enter a food");

            Console.WriteLine("2: Show a list of entered food ");

            Console.WriteLine("3: Delete a food item");

            Console.WriteLine("4: Delete all");

            Console.WriteLine("5: Insert at location");

            Console.WriteLine("6: Exit");

            selection = Console.ReadLine();

            bool isOneSelected = selection == "1";

            if(isOneSelected)

            {

                AddFood(GetFood());

            }

            else if(selection == "2")

            {

                ShowShoppingList();

            }

            else if(selection == "3")

            {

                DeleteAny();

            }

            else if(selection == "4")

            {

                shoppingList.Clear();

            }

            else if(selection == "5")

            {

                InsertAt();

            }

            else if(selection != "6")

            {

                Console.WriteLine("You've been bad. Please make a valid selection.");

            }

        }

            Console.WriteLine("Thank you for using the 'F00D Sh0pping List' program. have a nice day ;)");

    }

    public static Food GetFood()

    {

        Console.WriteLine("   Enter a food name:");

        string name = Console.ReadLine();

        Console.WriteLine("   Enter the quantity of '{0}':" ,name);

        int quantity = Convert.ToInt32(Console.ReadLine());

        Food  randomFood = new Food(); 

        randomFood.Name = name; 

        randomFood.Quantity = quantity;

        return randomFood;

    }

    public static void AddFood(Food food)

    {

        shoppingList.Add(food);

    }

    public static void ShowShoppingList()

    {

        Console.WriteLine(" ___________________________");

        Console.WriteLine(" ###### Shopping List ######");

        Console.WriteLine(" ___________________________");

        int addOneNumber = 0;

        foreach(Food currentFood in shoppingList)

        {

            addOneNumber++;

            Console.WriteLine("#{0} Name: {1}     Quantity: {2}",addOneNumber, currentFood.Name, currentFood.Quantity);

        }       

    }

    public static void DeleteAny()

    {

        Console.WriteLine("Pick witch item you want to delete");

        string usersInputToDelete = Console.ReadLine();

        int itemNumberToDelete = -1;

        //Error trapping

        bool isNumber = int.TryParse(usersInputToDelete, out itemNumberToDelete);

        if(isNumber)

        {

            shoppingList.RemoveAt(itemNumberToDelete-1);

        }

        else

        {

            Console.WriteLine("You've been bad. Please make a valid number.");

        }

        //shoppingList.RemoveAt(Convert.ToInt32(Console.ReadLine()));

​

    }

    public static void InsertAt()

    {

        Food newfood = GetFood();

        Console.WriteLine("Where do you want to insert at ");

        string whereUserWantsToInsertAt = Console.ReadLine();

        int whereUserWantsToInsertAt2 = Convert.ToInt32(whereUserWantsToInsertAt)-1;

        if(whereUserWantsToInsertAt2 > shoppingList.Count) 

        {

            Console.WriteLine("You've been bad. Please make a valid selection.");

        }   

        else    

        { 

            shoppingList.Insert(whereUserWantsToInsertAt2, newfood);

        }

    }    

​

}

​

​

​

​

​