Complete this assignment using Visual Basic. Suppose automobile repair customers are billed at the rate of $35 per hour for labor. Also, suppose costs for parts and supplies are subject to a 5% sales tax. Write a program to display a simplified bill. The customer’s name, the number of hours of labor, and the cost of parts and supplies should be entered into the program via text boxes. When a button is clicked, the customer’s name and the three costs should be displayed in a list box, as shown below.

Design the Interface:

First we need to design the interface.  The following image shows an example of what the form might look like when the program runs.

Suggested Control Names and Attributes:

Name Property	Text Property	Control Type	Notes
frmBill	Auto Repair	Form	Holds Controls
txtCustomer		Text Box	Captures customer’s name entered
txtHours		Text Box	Captures # of hours of labor entered
txtCost		Text Box	Captures cost of parts and supplies entered
btnDisplay	Display Bill	Button	Triggers the event for displaying bill
lstBill		List Box	Displays customer’s bill

Write the Code:

' Project: Auto Repair
' Description: Simulates an auto repair bill from user input.
' Name, hours of labor and cost of supplies are input by the user.
' Total cost is calculated and output to the screen with proper formatting.

Public Class frmBill

   Private Sub btnDisplay_Click(sender As Object, e As EventArgs) Handles btnDisplay.Click
      Const LABOR_RATE As Double = 35.0 'Constant for cost of labor
      Dim hours As Double = CDbl(txtHours.Text)
      Dim laborCost As Double = LABOR_RATE * hours
      Dim partsCost As Double = CDbl(txtCost.Text)
      Dim totalCost As Double = laborCost + partsCost 'Variable to calculate total cost
      lstBill.Items.Clear()
      lstBill.Items.Add("Customer " & txtCustomer.Text)
      lstBill.Items.Add("Labor Cost " & laborCost.ToString("C"))
      lstBill.Items.Add("Parts Cost " & partsCost.ToString("C"))
      lstBill.Items.Add("Total Cost " & totalCost.ToString("C"))
   End Sub

End Class