This print for content only-size & color not accurate 7" X 9-1/4" / casebound / malloy

Figure 24-4.

The sqlmetal.exe-generated entity classes

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8849CH24.qxd  10/19/07  10:11 AM  Page 849

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Notice that you have a new type extending DataContext that contains properties for each data

table in the specified database (as well, notice that the GetPetName() stored procedure is repre-

sented by a public method of the same name). Before we program against these new types, let’s

examine this autogenerated code in a bit more detail.

Examining the Generated Entity Classes

As you can see, sqlmetal.exe defined a separate entity class for each table in the AutoLot database

(Inventory, Customers, Orders, CreditRisks), with each column encapsulated by a type property. In

addition, notice that each entity class implements two interfaces (INotifyPropertyChanging and

INotifyPropertyChanged), each of which defines a single event:

namespace System.Data.Linq

{

public interface INotifyPropertyChanging

{