首先，我复制粘贴了这篇文章的答案
http://msdn.microsoft.com/en-gb/magazine/dn385704.aspx
图 1 显示了一个贫血域模型，它基本上是一个包含 getter 和 setter 的模式。
Figure 1 Typical Anemic Domain Model Classes Look Like Database Tables
public class Customer : Person
{
public Customer()
{
Orders = new List<Order>();
}
public ICollection<Order> Orders { get; set; }
public string SalesPersonId { get; set; }
public ShippingAddress ShippingAddress { get; set; }
}
public abstract class Person
{
public int Id { get; set; }
public string Title { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string CompanyName { get; set; }
public string EmailAddress { get; set; }
public string Phone { get; set; }
}
在这个更丰富的模型中，而不是简单地公开要读取和写入的属性，
Customer 的公共表面由显式方法组成。
Figure 2 A Customer Type That’s a Rich Domain Model, Not Simply Properties
public class Customer : Contact
{
public Customer(string firstName, string lastName, string email)
{
FullName = new FullName(firstName, lastName);
EmailAddress = email;
Status = CustomerStatus.Silver;
}
internal Customer()
{
}
public void UseBillingAddressForShippingAddress()
{
ShippingAddress = new Address(
BillingAddress.Street1, BillingAddress.Street2,
BillingAddress.City, BillingAddress.Region,
BillingAddress.Country, BillingAddress.PostalCode);
}
public void CreateNewShippingAddress(string street1, string street2,
string city, string region, string country, string postalCode)
{
ShippingAddress = new Address(
street1,street2,
city,region,
country,postalCode)
}
public void CreateBillingInformation(string street1,string street2,
string city,string region,string country, string postalCode,
string creditcardNumber, string bankName)
{
BillingAddress = new Address (street1,street2, city,region,country,postalCode );
CreditCard = new CustomerCreditCard (bankName, creditcardNumber );
}
public void SetCustomerContactDetails
(string email, string phone, string companyName)
{
EmailAddress = email;
Phone = phone;
CompanyName = companyName;
}
public string SalesPersonId { get; private set; }
public CustomerStatus Status { get; private set; }
public Address ShippingAddress { get; private set; }
public Address BillingAddress { get; private set; }
public CustomerCreditCard CreditCard { get; private set; }
}