static void Main(string[] args)
{
Invoice invoice1 = new Invoice { CustomerName = "Piitu" };
InvoiceItem milk = new InvoiceItem { Name = "Milk", Price = 0.8, Quantity = 2 };
invoice1.AddItem(milk);
InvoiceItem beer = new InvoiceItem { Name = "Beer", Price = 0.9, Quantity = 24 };
invoice1.AddItem(beer);
InvoiceItem cheese = new InvoiceItem { Name = "Cheese", Price = 4.5, Quantity = 1 };
invoice1.AddItem(cheese);
Console.WriteLine(invoice1.ToString());
}
/// <summary>
/// For adding an item to the invoice list
/// </summary>
/// <param name="item"></param>
public void AddItem(InvoiceItem item)
{
invoice.Add(item);
}