using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        List<InventoryItem> myInventory = new List<InventoryItem>()

        {

            new InventoryItem("Milk", 10),

            new InventoryItem("Eggs", 20),

            new InventoryItem("Apples", 30) 

        };

        int totalItems = 0;

        foreach (InventoryItem item in myInventory)

        {

            totalItems = totalItems + item.Quantity;

        }

        System.Console.WriteLine("I have " + totalItems + " items in my inventory.");

    }

}

​

public class InventoryItem

{

    private string _name;

    private int _qty;

    public string ItemName

    {

        get {return _name;}

        set {_name = value;}

    }

    public int Quantity

    {

        get {return _qty;}

        set {_qty = value;}

    }

    public InventoryItem (string name, int quantity)

    {

        _name = name;

        _qty = quantity;

    }

}