Visual Basic.NET How to Program (PDF)

Illustrations XXIII
9.6 CCircle class contains an x-y coordinate and a radius. 358
9.7 modCircleTest demonstrates class CCircle functionality. 360
9.8 CCircle2 class that inherits from class CPoint. 362
9.9 CPoint2 class represents an x-y coordinate pair as Protected data. 364
9.10 CCircle3 class that inherits from class CPoint2. 365
9.11 modCircleTest3 demonstrates class CCircle3 functionality. 367
9.12 CCircle4 class that inherits from class CPoint, which does not
provide Protected data. 369
9.13 modCircleTest4 demonstrates class CCircle4 functionality. 371
9.14 CCylinder class inherits from class CCircle4 and Overrides
method Area. 373
9.15 Testing class CCylinder. 375
9.16 CPoint3 base class contains constructors and finalizer. 378
9.17 CCircle5 class inherits from class CPoint3 and overrides a
finalizer method. 379
9.18 Demonstrating order in which constructors and finalizers are called. 381
10 Object-Oriented Programming: Polymorphism
10.1 CPoint class represents an x-y coordinate pair. 390
10.2 CCircle class that inherits from class CPoint. 391
10.3 Assigning derived-class references to base-class references. 393
10.4 Abstract CShape base class. 400
10.5 CPoint2 class inherits from MustInherit class CShape. 401
10.6 CCircle2 class that inherits from class CPoint2. 403
10.7 CCylinder2 class inherits from class CCircle2. 404
10.8 CTest2 demonstrates polymorphism in Point-Circle-Cylinder hierarchy. 406
10.9 MustInherit class CEmployee definition. 410
10.10 CBoss class inherits from class CEmployee. 411
10.11 CCommissionWorker class inherits from class CEmployee. 412
10.12 CPieceWorker class inherits from class CEmployee. 414
10.13 CHourlyWorker class inherits from class CEmployee. 416
10.14 CTest class tests the CEmployee class hierarchy. 417
10.15 Interface for returning age of objects of disparate classes. 420
10.16 CPerson class implements IAge interface. 421
10.17 CTree class implements IAge interface. 422
10.18 Demonstrate polymorphism on objects of disparate classes. 423
10.19 IShape interface provides methods Area and Volume and
property Name. 426
10.20 CPoint3 class implements interface IShape. 426
10.21 CCircle3 class inherits from class CPoint3. 427
10.22 CCylinder3 class inherits from class CCircle3. 429
10.23 CTest3 uses interfaces to demonstrate polymorphism in
Point-Circle-Cylinder hierarchy. 431
10.24 Bubble sort using delegates. 433
10.25 Bubble-sort Form application. 435