Chapter 9, Problem 2PP

Program Plan Intro

Drink vending machine simulator

Program plan:

Design the form:

• Place an eighteen label box controls on the form, and change its name and properties.
• Place a five picture box control on the form, and change its name and properties to display the images.
• Place a six panel controls on the form, and change its name and properties.
• Place a one command button control on the form, and change its name and properties to exit the application.

In code window, write the code:

Program.cs:

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

Form1.cs:

• Include the required libraries.
• Define namespace “VendingMachine”.
  • Define the structure with name “DrinkEntery”.
  • Define a class “Form1”.
  • In updateData() method,
    • Declare the required variables.
    • When user selects a drink, the application decrement “1” from the selected drink quantity.
    • The cost is added to total sales and it is displayed into label box.
  • In pictureBox1_Click() method,
    • Set the index value as “0” and call the updateData() method to perform this drink vending machine simulation.
  • In pictureBox2_Click() method,
    • Set the index value as “1” and call the updateData() method to perform this drink vending machine simulation.
  • In pictureBox3_Click() method,
    • Set the index value as “3” and call the updateData() method to perform this drink vending machine simulation.
  • In pictureBox4_Click() method,
    • Set the index value as “2” and call the updateData() method to perform this drink vending machine simulation.
  • In pictureBox5_Click() method,
    • Set the index value as “4” and call the updateData() method to perform this drink vending machine simulation.
  • In btnExit() 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	Program8_11
label1	Text	Select a Drink
label2	Text	$1.00
label3	Text	Drinks Left:
label4	Text	$1.00
label5	Text	Drinks Left:
label6	Text	$1.50
label7	Text	Drinks Left:
label8	Text	$1.00
label9	Text	Drinks Left:
label10	Text	Total Sales
label11	Text	$1.50
label12	Text	Drinks Left:
lblResult	Text	$0.00
cola	Text	20
rootbeer	Text	20
grapesoda	Text	20
lemonlime	Text	20
creamsoda	Text	20
pictureBox1	Image	Select Resource
pictureBox2	Image	Select Resource
pictureBox3	Image	Select Resource
pictureBox4	Image	Select Resource
pictureBox5	Image	Select Resource
panel1	Text	(Empty)
panel2	Text	(Empty)
panel3	Text	(Empty)
panel4	Text	(Empty)
panel5	Text	(Empty)
panel6	Text	(Empty)
btnExit	Text	Exit

• Add eighteen label box controls to the form from Toolbox.
• Add five picture box controls to the form from Toolbox.
• Add six panel controls to the form from Toolbox.
• Add one command button control to the form from Toolbox.