1. R. Ching  MIS Department  California State University, Sacramento Week 12 Object-Oriented Programming Base and Derived Classes Lab Exercise

2. R. Ching  MIS Department  California State University, Sacramento Steps Create the classCreate the class Define the propertiesDefine the properties Create the accessor methodsCreate the accessor methods Create the constructorsCreate the constructors Create the formCreate the form Create the derived classesCreate the derived classes

3. R. Ching  MIS Department  California State University, Sacramento  Add the class from the Project menu

4. R. Ching  MIS Department  California State University, Sacramento Assign a name to the class

5. R. Ching  MIS Department  California State University, Sacramento  Define the class’ properties

6. R. Ching  MIS Department  California State University, Sacramento Accessor Methdods  Add the accessor methods Tests the length of the character string

7. R. Ching  MIS Department  California State University, Sacramento

9. Constructors  Add the constructors

10. R. Ching  MIS Department  California State University, Sacramento Create the Form Text boxes Combo box Text box Group box Radio buttons Buttons List box Labels

11. R. Ching  MIS Department  California State University, Sacramento Add the Subclasses

12. R. Ching  MIS Department  California State University, Sacramento

13. Constructor (the same for each class)

14. R. Ching  MIS Department  California State University, Sacramento Super and Subclasses

15. R. Ching  MIS Department  California State University, Sacramento Define the Objects Objects to classes Object Class

16. R. Ching  MIS Department  California State University, Sacramento Button Clicked Find the checked radio button Instantiate the object

17. R. Ching  MIS Department  California State University, Sacramento

19. Adding Shared Variables

20. R. Ching  MIS Department  California State University, Sacramento Read-only property procedures

21. R. Ching  MIS Department  California State University, Sacramento Temporary Fix

22. R. Ching  MIS Department  California State University, Sacramento When the user selects an item in the list box, the corresponding counts appear in the labels

23. R. Ching  MIS Department  California State University, Sacramento Test for the Selected Item

24. R. Ching  MIS Department  California State University, Sacramento