Answer to Question #254850 in Visual Basic for Mark

Question

The system should allow for a customer to check the price of an item from inside the store. Perform a purchase transaction. The system should allow the end user to accept the cash amount and fill in the accepted. Produce a receipt for the customer showing the total cost of items and change given to the customer. The receipt must also show the VAT(15%) of items showing a breakdown of the items purchased.

Answer 1

Public Class Form1
    Private amount As Double
    Private total As Double
    Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click


        Dim number As Integer
        Double.TryParse(txtPriceItem.Text, amount)
        Integer.TryParse(txtNumber.Text, number)
        Dim subTotal As Double = number * amount
        Dim VAT As Double = subTotal * 0.15


        total = subTotal + VAT
        txtVAT.Text = VAT.ToString("N2")
        txtTotal.Text = total.ToString("N2")
        btnCalculateChange.Enabled = True
    End Sub


    Private Sub btnCalculateChange_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculateChange.Click
        Double.TryParse(txtAmount.Text, amount)


        Dim change As Double = amount - total
        txtChange.Text = change.ToString("N2")
    End Sub
End Class

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form

    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        Try
            If disposing AndAlso components IsNot Nothing Then
                components.Dispose()
            End If
        Finally
            MyBase.Dispose(disposing)
        End Try
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.txtChange = New System.Windows.Forms.TextBox()
        Me.Label6 = New System.Windows.Forms.Label()
        Me.txtTotal = New System.Windows.Forms.TextBox()
        Me.Label5 = New System.Windows.Forms.Label()
        Me.txtVAT = New System.Windows.Forms.TextBox()
        Me.Label2 = New System.Windows.Forms.Label()
        Me.txtAmount = New System.Windows.Forms.TextBox()
        Me.Label4 = New System.Windows.Forms.Label()
        Me.txtNumber = New System.Windows.Forms.TextBox()
        Me.Label1 = New System.Windows.Forms.Label()
        Me.btnCalculateChange = New System.Windows.Forms.Button()
        Me.btnCalculate = New System.Windows.Forms.Button()
        Me.Label3 = New System.Windows.Forms.Label()
        Me.txtPriceItem = New System.Windows.Forms.TextBox()
        Me.SuspendLayout()
        '
        'txtChange
        '
        Me.txtChange.Location = New System.Drawing.Point(147, 146)
        Me.txtChange.Name = "txtChange"
        Me.txtChange.ReadOnly = True
        Me.txtChange.Size = New System.Drawing.Size(100, 20)
        Me.txtChange.TabIndex = 12
        '
        'Label6
        '
        Me.Label6.AutoSize = True
        Me.Label6.Location = New System.Drawing.Point(86, 150)
        Me.Label6.Name = "Label6"
        Me.Label6.Size = New System.Drawing.Size(47, 13)
        Me.Label6.TabIndex = 10
        Me.Label6.Text = "Change:"
        '
        'txtTotal
        '
        Me.txtTotal.Location = New System.Drawing.Point(147, 94)
        Me.txtTotal.Name = "txtTotal"
        Me.txtTotal.ReadOnly = True
        Me.txtTotal.Size = New System.Drawing.Size(100, 20)
        Me.txtTotal.TabIndex = 15
        '
        'Label5
        '
        Me.Label5.AutoSize = True
        Me.Label5.Location = New System.Drawing.Point(99, 98)
        Me.Label5.Name = "Label5"
        Me.Label5.Size = New System.Drawing.Size(34, 13)
        Me.Label5.TabIndex = 11
        Me.Label5.Text = "Total:"
        '
        'txtVAT
        '
        Me.txtVAT.Location = New System.Drawing.Point(147, 66)
        Me.txtVAT.Name = "txtVAT"
        Me.txtVAT.ReadOnly = True
        Me.txtVAT.Size = New System.Drawing.Size(100, 20)
        Me.txtVAT.TabIndex = 17
        '
        'Label2
        '
        Me.Label2.AutoSize = True
        Me.Label2.Location = New System.Drawing.Point(74, 70)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(60, 13)
        Me.Label2.TabIndex = 8
        Me.Label2.Text = "VAT (15%):"
        '
        'txtAmount
        '
        Me.txtAmount.Location = New System.Drawing.Point(147, 120)
        Me.txtAmount.Name = "txtAmount"
        Me.txtAmount.Size = New System.Drawing.Size(100, 20)
        Me.txtAmount.TabIndex = 16
        '
        'Label4
        '
        Me.Label4.AutoSize = True
        Me.Label4.Location = New System.Drawing.Point(60, 124)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(73, 13)
        Me.Label4.TabIndex = 6
        Me.Label4.Text = "Enter amount:"
        '
        'txtNumber
        '
        Me.txtNumber.Location = New System.Drawing.Point(147, 40)
        Me.txtNumber.Name = "txtNumber"
        Me.txtNumber.Size = New System.Drawing.Size(100, 20)
        Me.txtNumber.TabIndex = 13
        '
        'Label1
        '
        Me.Label1.AutoSize = True
        Me.Label1.Location = New System.Drawing.Point(60, 44)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(73, 13)
        Me.Label1.TabIndex = 7
        Me.Label1.Text = "Enter number:"
        '
        'btnCalculateChange
        '
        Me.btnCalculateChange.Enabled = False
        Me.btnCalculateChange.Location = New System.Drawing.Point(147, 180)
        Me.btnCalculateChange.Name = "btnCalculateChange"
        Me.btnCalculateChange.Size = New System.Drawing.Size(100, 23)
        Me.btnCalculateChange.TabIndex = 4
        Me.btnCalculateChange.Text = "Calculate change"
        Me.btnCalculateChange.UseVisualStyleBackColor = True
        '
        'btnCalculate
        '
        Me.btnCalculate.Location = New System.Drawing.Point(55, 181)
        Me.btnCalculate.Name = "btnCalculate"
        Me.btnCalculate.Size = New System.Drawing.Size(75, 23)
        Me.btnCalculate.TabIndex = 5
        Me.btnCalculate.Text = "Calculate"
        Me.btnCalculate.UseVisualStyleBackColor = True
        '
        'Label3
        '
        Me.Label3.AutoSize = True
        Me.Label3.Location = New System.Drawing.Point(10, 16)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(128, 13)
        Me.Label3.TabIndex = 7
        Me.Label3.Text = "Enter the price of an item:"
        '
        'txtPriceItem
        '
        Me.txtPriceItem.Location = New System.Drawing.Point(147, 13)
        Me.txtPriceItem.Name = "txtPriceItem"
        Me.txtPriceItem.Size = New System.Drawing.Size(100, 20)
        Me.txtPriceItem.TabIndex = 13
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(277, 218)
        Me.Controls.Add(Me.txtChange)
        Me.Controls.Add(Me.Label6)
        Me.Controls.Add(Me.txtTotal)
        Me.Controls.Add(Me.Label5)
        Me.Controls.Add(Me.txtVAT)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.txtAmount)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.txtPriceItem)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.txtNumber)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.btnCalculateChange)
        Me.Controls.Add(Me.btnCalculate)
        Me.MaximizeBox = False
        Me.MinimizeBox = False
        Me.Name = "Form1"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "Calculator"
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub
    Friend WithEvents txtChange As System.Windows.Forms.TextBox
    Friend WithEvents Label6 As System.Windows.Forms.Label
    Friend WithEvents txtTotal As System.Windows.Forms.TextBox
    Friend WithEvents Label5 As System.Windows.Forms.Label
    Friend WithEvents txtVAT As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents txtAmount As System.Windows.Forms.TextBox
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents txtNumber As System.Windows.Forms.TextBox
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents btnCalculateChange As System.Windows.Forms.Button
    Friend WithEvents btnCalculate As System.Windows.Forms.Button
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents txtPriceItem As System.Windows.Forms.TextBox

End Class