How to define a tester program to test the object

Assignment Help Visual Basic Programming
Reference no: EM131132231

Visual Basic 2010 Question

Chapter 9 Lab Assignments

Classes and Objects

Objectives

In this lab assignment, students will learn

- How to design and define class

- How to create object

- How to define a tester program to test the object

Goals

In this lab assignment, students will demonstrate the abilities to

- Design and define class

- Create object

- Define a tester program to test the object

Develop a "" BankAccount "" windows form project, which will allow user to

- Enter amount of money to deposit, withdraw or move

- Deposit money in checking or savings account.

- Withdraw money from checking or savings account.

- Move money between checking account and saving account.

- View the new balance on the form after each transaction.

Here is sample input/output

When start to run project, initial balances for both checking and saving accounts ($1000.00) should be displayed on the form.

After deposit $500.00 to checking account.

After move $800.00 from saving to checking account.

If user attempts to withdraw $4000.00 from checking account at this moment, a MessageBox should be displayed with an error message.

Project specifications --------

1. This project should perform object-oriented programming. Add a class file ""Account.vb"" to define class ""Account"", rename ""Form1.vb"" file as ""AccountTesterForm.vb"" which will create account object and test the object's attributes and behaviors.

2. This is the GUI for the bank. The amount of money need to be entered from the textbox, each button represents a type of transaction. The new balance will be displayed on the form after each transaction. Please use the same control names in order to use the tester program code below.

balanceLabel

amountTextBox

moveStoCButton

withdrawSavingButton

depositSavingButton

moveCtoSButton

depositCheckingButton

withdrawCheckingButton

3. Here is the definition of class Account, some codes are missing, you may copy the code to your project in Visual Studio and complete the missing code.

Public Class Account

Private savingBalance As Decimal 'instance variable for balance in saving account

Private checkingBalance As Decimal 'instance variable for balance in checking account

constructor which initialize balances in both accounts to 1000.00

Public Sub New()

savingBalance = 1000.0

checkingBalance = 1000.0

End Sub

property for savingBalance

Public Property Saving() As Double

Get

Return savingBalance

End Get

Set(ByVal value As Double)

If value Checking Then

Throw New ArgumentOutOfRangeException

Withdrawal amount must be less than or equal to balance."")

ElseIf amount <= 0D Then

Throw New ArgumentOutOfRangeException

Withrawal amount must be positive."")

End If

Checking -= amount

End Sub

define how to withdraw money from saving account

Public Sub withdrawSaving(ByVal amount As Decimal)

write your code here

End Sub

define how to move money from checking to saving account

Public Sub moveMoneyCheckingtoSaving(ByVal amount As Double)

write your code here

End Sub

define how to move money from saving to checking account

Public Sub moveMoneySavingtoChecking(ByVal amount As Double)

write your code here

End Sub

End Class

4. Here is the code for accountTesterForm.vb, some codes are missing, you may copy the code to your project in Visual Studio and complete the missing code (The header of event handler methods can NOT be copied, they need to be created by double clicking the corresponding buttons).

Option Strict On

Public Class AccountTesterForm

Dim account As New Account()

Private Sub AccountTesterForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

displayBalance()

End Sub

Private Sub DepositCheckingButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DepositCheckingButton.Click

Try

account.depositChecking(Convert.ToDecimal(AmountTextBox.Text))

displayBalance()

Catch ex As ArgumentOutOfRangeException

MessageBox.Show(""Deposit amount must be positive.

Error"", MessageBoxButtons.OK, MessageBoxIcon.Error)

End Try

AmountTextBox.Clear() ' clear the inputTextBox

AmountTextBox.Focus()

End Sub

Private Sub DepositSavingButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DepositSavingButton.Click

write your code here

End Sub

Private Sub withdrawCheckingButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles withdrawCheckingButton.Click

write your code here

End Sub

Private Sub withdrawSavingButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles withdrawSavingButton.Click

write your code here

End Sub

Private Sub movectosButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles movectosButton.Click

write your code here

End Sub

Private Sub moveStoCButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles moveStoCButton.Click

write your code here

End Sub

Private Sub displayBalance()

balanceLabel.Text = ""Checking balance: "" & String.Format(""{0:C}"", account.Checking) & vbCrLf & ""Saving balance: "" & String.Format(""{0:C}"", account.Saving)

End Sub

End Class".

Reference no: EM131132231

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