Chapter 11, Problem 5PP

Program Plan Intro

PreferredCustomer Class

Program plan:

Design the form:

Place a four text boxes control on the form, and change its name and properties to get the full name, address, phone number, and amount purchased from the user.

Place a four label boxes control on the form, and change its name and properties.

Place a one radio buttons control on the form, and change its name and properties.

Place a command button on the form, and change its name and properties to retrieve the object properties and then display the values in message box.

In code window, write the code:

Program.cs:

Include the required libraries.

Define the namespace “Program11_5”.

Define a class “Program”.

Define a constructor for the class.

Define required functions to run “Form1”.

Form1.cs:

Include the required libraries.

Define namespace “Program11_5”.

Define a class “Form1”.

In Form1_Load() method,

Create an object for Customer derived class.

Assign the text box input to field of base class using derived class object.

Display the retrieved fields in message box.

Close the application.

Person.cs:

Include the required libraries.

Define namespace “Program11_5”.

Define a base class “Person”.

Declare the required fields.

Define the parameterless constructor.

Define Name, address, and phone number property to use get and set methods.

Customer.cs:

Include the required libraries.

Define namespace “Program11_5”.

Define a derived class “Customer” which is derived from base class “Person”.

Declare the required fields.

Define the parameterless constructor to initialize the required fields.

Define Customer number and addToMailList property to use get and set methods.

PreferredCustomer.cs:

Include the required libraries.

Define namespace “Program11_5”.

Define a derived class “PreferredCustomer” which is derived from base class “Customer”. But this “Customer” class is derived from base class “Person”.

Declare the required fields.

Define the parameterless constructor to initialize the required fields.

Define purchased amount and discount level property to use get and set methods. Calculate the discount level based on purchased amount.

Form Design:

View the Form Design in IDE.

Set the Form Control properties in Properties window as follows:

Object	Property	Setting
Form1	Text	Program11_5
label1	Text	Full Name:
label2	Text	Address:
label3	Text	Phone Number:
Label4	Text	Amount Purchased: $
textBox1	Text	(Empty)
textBox2	Text	(Empty)
textBox3	Text	(Empty)
textBox4	Text	(Empty)
radioButton1	Text	Don’t add me to mailing list
btnDisplay	Text	Display

Add four label box controls to the form from Toolbox.

Add four text box controls to the form from Toolbox.

Add one radio button control to the form from Toolbox.

Add one command button control to the form from Toolbox.