Chapter 10, Problem 7PP

Program Plan Intro

E-Mail Address Book

Program plan:

Design the form:

Place one list box control 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 “Program10_7”.
  • Define a class “Program”.
    • Define a constructor for the class.
    • Define required functions to run “Form1”.

Form1.cs:

• Include the required libraries.
• Define namespace “Program10_7”.
  • Define a class “Form1”.
  • In Form1_Load() method,
    • Initialize the values for the properties.
    • Define a constant.
    • Create an object for PersonEntry derived class.
    • Display the retrieved fields in message box.
  • Close the application.

PersonEntry.cs:

• Include the required libraries.
• Define namespace “Program10_7”.
  • Define a base class “RetailItem”.
    • Declare the required fields.
    • Define the parameter constructor.
    • Define Name, Email, and PhoneNum property to use get and set methods.

Form Design:

View the Form Design in IDE.

Set the Form Control properties in Properties window as follows:

Object	Property	Setting
Form1	Text	Program10_7
listBox1	Items	(Collection)

Add one list box control to the form from Toolbox.