a) Explain the purpose of the following objects as used in VB.NET.i. Button (2 marks)ii. Text Box (2 marks)iii. Label (2 marks)iv. Radio Button (2 marks)b) Write a code that can display the following message box: (8 marks)c) Discuss THREE types of errors one is likely to encounter in event driven programming.(6 marks)d) Draw a GUI and write a program to show case how items can be added, deleted, and countedin a list box control. (8 marks)e) Describe TWO main ways that you can a VB.NET project. (4 marks)f) Design a basic VB.NET program that displays; your official names, registration number, yourlecturer’s name, and lecturer’s email address. (6 marks)SECTION A (QUESTION ONE IS COMPULSORY AND CHOSE ANY OTHER TWOQUESTIONS)QUESTION 1 (COMPULSORY 20MARKS)a) With examples distinguish between the following terms as used in Event driven programming;i. Entity (2 marks)ii. File (2 marks)iii. Record (2 marks)iv. Table (2 marks)b) A program is required to determine the gross pay for each of the several employees of acertain company. The company pays “straight-time” for the first 40 hours worked by eachemployee and pays “one-and a half time” for all hours worked in excess of 40 hours. You aregiven a list of employees in the company, the number of hours each employee worked and thehourly rate of each employee. You are to design a program in which you should input thisinformation for each employee, and then compute and display the employee’s gross pay. use textboxes for both inputs and outputs.Required:i. Design the graphical user interface for this program (4 marks)ii. Write a program code to compute the gross pay. Your program should validate the inputsin such a way that the names of the employees must be input, the number of hoursworked and pay rate must be numeric, greater than zero but less than or equal to 60 andgreater than zero respectively. Display an appropriate message in case of violation.(8 marks)QUESTION 2 (20MARKS)a) With the use of appropriate syntax explain THREE ways in which the IF statement can beimplemented in Event Driven Programming. (6 marks)b) Describe FOUR main components in a Visual Basic Programming Environment. (8 marks)c) Draw a flowchart for a program that calculates the average of three grades and prints theaverage. The word GOOD should be printed only if the average is more than 80. (6 marks)QUESTION 3 (20MARKS)a) Using basic codes describe the following repetition structures in event driven programming.i. For Next (2 marks)ii. Do loop until (2 marks)iii. Do while loop (2 marks)b) Write a program that can be used to calculate the surface area of the next world cup ball.(8 marks)c) Design a code that can ensure that the user can Cut, Copy, and Paste items from one text boxto another text box by right clicking the mouse button. (6 marks)QUESTION 4 (20MARKS)a) Outline TWO examples of event driven programming languages. (2 marks)b) Explain how you can create a menu called Edit that has Cut, Copy, and Paste sub menus.(6 marks)c) Design a program that reads in a number through a text box. If the number is greater than five,it displays the cube of the number; else it displays the square of the number. (6 marks)d) Demonstrate the steps involved in setting up a connection to a database or other types of datasource using VB.NET. (6 marks)

MessageBox.Show("This is a message box")

'Adding items to the list box
ListBox1.Items.Add("Item1")
ListBox1.Items.Add("Item2")

'Deleting items from the list box
ListBox1.Items.Remove("Item1")

'Counting items in the list box
Dim count As Integer = ListBox1.Items.Count

Public Class Form1
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        MessageBox.Show("Name: John Doe, Registration Number: 12345, Lecturer's Name: Prof. Smith, Lecturer's Email: [email protected]")
    End Sub
End Class