Chapter 2, Problem 6PP

Program Plan Intro

Orion Constellation

Program plan:

Design the form:

• Place a seven label box control on the form, and change its name and properties to display the star name.
• Place a one picture box control on the form, and change its name and properties to display the image.
• Place a one command button control on the form, and change its name and properties to show the star names in label boxes.
• Place a one command button control on the form, and change its name and properties to hide the star names from label boxes.
• Place a one command button control on the form, and change its name and properties to close the application.

In code window, write the code:

Program.cs:

• Include the required libraries.
• Define the namespace “Orion”.
  • Define a class “Program”.
    • Define a constructor for the class.
    • Define required functions to run “Form1”.

Form1.cs:

• Include the required libraries.
• Define namespace “Orion”.
  • Define a class “Form1”.
  • In btnShowStar_Click() method,
    • Set the visible to each label box to display the star names.
  • In btnHideStar_Click() method,
    • Set the invisible to each label box to hide the star names.
  • In btnExit_Click() method,
    • Close the application.

Form Design:

View the Form Design in IDE.

Set the Form Control properties in Properties window as follows:

Object	Property	Setting
Form1	Text	Orion Constellation
pictureBox1	Image	Select Resource
label1	Text	Betelgeuse
label2	Text	Meissa
label3	Text	Alnitak
label4	Text	Alnilam
label5	Text	Mintaka
label6	Text	Saiph
label7	Text	Rigel
btnShowStar	Text	Show Star Names
btnHideStar	Text	Hide Star Names
btnExit	Text	Exit

• Add seven label box controls to form from Toolbox.
• Add one picture box control to form from Toolbox.
• Add three command box controls to the form from Toolbox.