Description

This application evaluates payroll, using the total time worked in one or two weeks by an employee and his or her hourly salary. The calculation takes overtime into account.

Practical Learning: Creating the Application

1. Start Microsoft Visual Studio
2. On the Visual Studio 2022 dialog box, click Create a New Project
3. In the Create a New Project dialog box, in the Languages combo box, select Visual Basic
4. In the list project templates, click Windows Forms App
5. Click Next
6. In the Configure Your New Project dialog box, set the Project Name to PayrollEvaluation2
7. Click Next
8. In the Additional Information dialog box, in the Framework combo box, select the highest version (.NET 9.0 (Standard Term Support)).
   Click Create
9. In the Solution Explorer, right-click Form1.cs and click Rename
10. Type Exercise (to get Exercise.cs) and press Enter twice
11. Design the form as follows:
     

    

    Control		Name	Text	Other Properties
    GroupBox			Employee Identification
    Label			&Employee Name:
    TextBox		TxtEmployeeName		AutoCompleteCustomSource Andy Barang Thomas Stones Gertrude Monay Christophe Yuen Micheline Hammond Paul Bertrand Yamaguchi AutoCompleteSource: Suggest AutoCompleteMode: CustomSource
    Label			Hourly &Salary:
    TextBox		TxtHourlySalary
    GroupBox			Time Values
    Label			Monday
    Label			Tuesday
    Label			Wednesday
    Label			Thursday
    Label			Friday
    Label			Saturday
    Label			Sunday
    Label			First Week:
    TextBox		TxtMonday1	0.00	TextAlign: Right
    TextBox		TxtTuesday1	0.00	TextAlign: Right
    TextBox		TxtWednesday1	0.00	TextAlign: Right
    TextBox		TxtThursday1	0.00	TextAlign: Right
    TextBox		TxtFriday1	0.00	TextAlign: Right
    TextBox		TxtSaturday1	0.00	TextAlign: Right
    TextBox		TxtSunday1	0.00	TextAlign: Right
    Label			Second Week:
    TextBox		TxtMonday2	0.00	TextAlign: Right
    TextBox		TxtTuesday2	0.00	TextAlign: Right
    TextBox		TxtWednesday2	0.00	TextAlign: Right
    TextBox		TxtThursday2	0.00	TextAlign: Right
    TextBox		TxtFriday2	0.00	TextAlign: Right
    TextBox		TxtSaturday2	0.00	TextAlign: Right
    TextBox		TxtSunday2	0.00	TextAlign: Right
    GroupBox			Payroll Processing
    Label			Hours
    Label			Amount
    Label		btnCalculate	Calculate
    Label			Regular
    TextBox		TxtRegularTime	0.00	TextAlign: Right Enabled: False
    TextBox		TxtRegularAmount	0.00	TextAlign: Right Enabled: False
    Label			Net Pay:
    TextBox		TxtNetPay	0.00	TextAlign: Right Enabled: False
    Label			Overtime
    TextBox		TxtOvertime	0.00	TextAlign: Right Enabled: False
    TextBox		TxtOvertimeAmount	0.00	TextAlign: Right Enabled: False
    Label		btnClose		AutoSize: False

12. On the form, double-click the Calculate label and implement its event as follows:
    

    Public Class Exercise
        Private Sub BtnCalculateClick(sender As Object, e As EventArgs) Handles BtnCalculate.Click
            Dim Week1Monday As Double
            Dim Week1Tuesday As Double
            Dim Week1Wednesday As Double
            Dim Week1Thursday As Double
            Dim Week1Friday As Double
            Dim Week1Saturday As Double
            Dim Week1Sunday As Double
            Dim Week2Monday As Double
            Dim Week2Ttuesday As Double
            Dim Week2Wednesday As Double
            Dim Week2Thursday As Double
            Dim Week2Friday As Double
            Dim Week2Saturday As Double
            Dim Week2Sunday As Double
    
            Dim HourlySalary As Double
    
            REM Get the hourly salary. Use exception handling in case the user types a bad value.
    
            Try
                HourlySalary = CDbl(TxtHourlySalary.Text)
            Catch fe As FormatException
                MsgBox("The value you typed for the salary is invalid. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
    
                TxtHourlySalary.Focus()
            End Try
    
            REM Get the value for each work dayworked.
            REM Use exception handling for each text box in case the user types a bad value.
            Try
                Week1Monday = CDbl(TxtWeek1Monday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Monday of the first week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek1Monday.Focus()
            End Try
    
            Try
                Week1Tuesday = CDbl(TxtWeek1Tuesday.Text)
            Catch fe As FormatException
    
                MsgBox("You typed an invalid value for Tuesday of the first week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek1Tuesday.Focus()
            End Try
    
            Try
                Week1Wednesday = CDbl(TxtWeek1Wednesday.Text)
            Catch fe As FormatException
    
                MsgBox("You typed an invalid value for Wednesday of the first week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek1Wednesday.Focus()
            End Try
    
            Try
                Week1Thursday = CDbl(TxtWeek1Thursday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Thursday of the first week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek1Thursday.Focus()
            End Try
    
            Try
                Week1Friday = CDbl(TxtWeek1Friday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Firday of the first week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek1Friday.Focus()
            End Try
    
            Try
                Week1Saturday = CDbl(TxtWeek1Saturday.Text)
            Catch ex As Exception
                MsgBox("You typed an invalid value for Saturday of the first week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek1Saturday.Focus()
            End Try
    
            Try
                Week1Sunday = CDbl(TxtWeek1Sunday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Sunday of the first week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek1Sunday.Focus()
            End Try
    
            Try
                Week2Monday = CDbl(TxtWeek2Monday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Monday of the second week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek2Monday.Focus()
            End Try
    
            Try
                Week2Ttuesday = CDbl(TxtWeek2Tuesday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Tuesday of the second week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek2Tuesday.Focus()
            End Try
    
            Try
                Week2Wednesday = CDbl(TxtWeek2Wednesday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Wednesday of the second week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek2Wednesday.Focus()
            End Try
    
            Try
                Week2Thursday = CDbl(TxtWeek2Thursday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Thursday of the second week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek2Thursday.Focus()
            End Try
    
            Try
                Week2Friday = CDbl(TxtWeek2Friday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Friday of the second week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek2Friday.Focus()
            End Try
    
            Try
                Week2Saturday = CDbl(TxtWeek2Saturday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Saturday of the second week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek2Saturday.Focus()
            End Try
    
            Try
                Week2Sunday = CDbl(TxtWeek2Sunday.Text)
            Catch fe As FormatException
                MsgBox("You typed an invalid value for Sunday of the second week. " &
                       "Please try again.", "Payroll Evaluation",
                       MsgBoxStyle.OkOnly Or MsgBoxStyle.Information)
                TxtWeek2Sunday.Focus()
            End Try
    
            Dim Week1RegularTime As Double
            Dim Week2RegularTime As Double
            Dim Week1OverTime As Double
            Dim Week2OverTime As Double
            Dim Week1RegularPay As Double
            Dim Week2RegularPay As Double
            Dim Week1OvertimePay As Double
            Dim Week2OvertimePay As Double
    
            REM Calculate the total number of hours for each week
            Dim Week1TotalTime = Week1Monday + Week1Tuesday + Week1Wednesday +
                             Week1Thursday + Week1Friday + Week1Saturday + Week1Sunday
            Dim Week2TotalTime = Week2Monday + Week2Ttuesday + Week2Wednesday +
                             Week2Thursday + Week2Friday + Week2Saturday + Week2Sunday
    
            REM The overtime Is paid time And half
            Dim OvertimeSalary As Double = HourlySalary * 1.5
    
            REM  If the employee worked below 40 hours, there Is no overtime
            If Week1TotalTime < 40 Then
                Week1RegularTime = Week1TotalTime
                Week1RegularPay = HourlySalary * Week1RegularTime
                Week1OverTime = 0.00
                Week1OvertimePay = 0.00
                REM  If the employee worked over 40 hours, calculate the overtime
            ElseIf Week1TotalTime >= 40 Then
                Week1RegularTime = 40
                Week1RegularPay = HourlySalary * 40
                Week1OverTime = Week1TotalTime - 40
                Week1OvertimePay = Week1OverTime * OvertimeSalary
            End If
    
            If Week2TotalTime < 40 Then
                Week2RegularTime = Week2TotalTime
                Week2RegularPay = HourlySalary * Week2RegularTime
                Week2OverTime = 0.00
                Week2OvertimePay = 0.00
            ElseIf Week2TotalTime >= 40 Then
                Week2RegularTime = 40
                Week2RegularPay = HourlySalary * 40
                Week2OverTime = Week2TotalTime - 40
                Week2OvertimePay = Week2OverTime * OvertimeSalary
            End If
    
            Dim RegularTime = Week1RegularTime + Week2RegularTime
            Dim OverTime = Week1OverTime + Week2OverTime
            Dim RegularPay = Week1RegularPay + Week2RegularPay
            Dim OvertimePay = Week1OvertimePay + Week2OvertimePay
            Dim NetPay = RegularPay + OvertimePay
    
            TxtRegularTime.Text = FormatNumber(RegularTime)
            TxtOverTime.Text = FormatNumber(OverTime)
            TxtRegularPay.Text = FormatCurrency(RegularPay)
            TxtOvertimePay.Text = FormatCurrency(OvertimePay)
    
            TxtNetPay.Text = FormatCurrency(NetPay)
        End Sub
    End Class

13. Double-click the Close label and implement its Click event as follows:
    

    Private Sub BtnCloseClick(sender As Object, e As EventArgs) Handles BtnClose.Click
        End
    End Sub

14. Execute the application to see the result

    

15. Enter the following values in the text boxes:

    Employee Name: Gertrude Monay
    Hourly Salary: 28.46
    First Week
        Monday:    8
        Tuesday:   7.5
        Wednesday: 6
        Thursday:  7.5
        Friday:    6.5
        Saturday:  0
        Sunday:    0
    Second Week
        Monday:    7
        Tuesday:   8
        Wednesday: 6
        Thursday:  6
        Friday:    8
        Saturday:  0
        Sunday:    0

    

16. Click the Calculate button:

    

17. Replace the values as follows:

    Employee Name: Thomas Stones
    Hourly Salary: 31.68
    First Week
        Monday:    8
        Tuesday:   10
        Wednesday: 9
        Thursday:  8.5
        Friday:    8
        Saturday:  0
        Sunday:    0
    Second Week
        Monday:    9
        Tuesday:   8
        Wednesday: 10.5
        Thursday:  9
        Friday:    8.5
        Saturday:  0
        Sunday:    0

18. Click the Calculate button:

    

19. Close the form and return to your programming environment

Home	Copyright © 2010-2025, FunctionX	Thursday 12 December 2024, 09:34	Home