C# 5.0 Programmer's Reference

566 ❘ CHAPTER 25 Serialization
}
}
Description = description;
Quantity = quantity;
UnitPrice = unitPrice;
This class has Description, Quantity, and UnitPrice fields; a parameterless constructor; and an
initializing constructor.
The following code shows the Order class.
public class Order
{
public DateTime OrderDate;
public OrderItem[] OrderItems;
}
public Order() { }
public Order(DateTime orderDate, params OrderItem[] orderItems)
{
OrderDate = orderDate;
OrderItems = orderItems;
}
This class includes an OrderDate field and an array of OrderItem objects. It also has a parameterless
constructor and an initializing constructor.
The following code shows the Person class.
// Customer and related classes.
public class Customer
{
public string FirstName, LastName;
public List Orders = new List();
}
public Customer() { }
public Customer(string firstName, string lastName, params Order[] orders)
{
FirstName = firstName;
LastName = lastName;
foreach (Order order in orders) Orders.Add(order);
}
This class has FirstName and LastName fields. It holds information about orders in a List.
When the program starts, it uses the following code to create a Customer object and display its data.
// Create some OrderItems.
OrderItem item1 = new OrderItem("Pencil", 12, 0.25m);
OrderItem item2 = new OrderItem("Notepad", 6, 1.00m);
OrderItem item3 = new OrderItem("Binder", 1, 3.50m);
OrderItem item4 = new OrderItem("Tape", 12, 0.75m);
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