public override WithdrawalTransaction Withdraw(Decimal amount)
{
var transaction = new WithdrawalTransaction(amount, this);
transaction.Initiate();
return(transaction);
}
public void Apply(WithdrawalTransaction d)
{
if (d.WithdrawalAmount > Balance)
{
throw new InvalidOperationException("we make sure this never happens");
}
Balance = Balance - d.WithdrawalAmount;
}
public static void Main(string[] args)
{
var account = new Account();
var cashMachine = new Screen();
var withdrawalTransaction = new WithdrawalTransaction(account, cashMachine);
withdrawalTransaction.Execute();
}
private void buttonWithdraw_Click(object sender, EventArgs e)
{
toolStripStatusLabelInfoMessage.Text = "Enter a Withdrawal";
DepositOrWithdrawDialog withdrawalDlg = new DepositOrWithdrawDialog();
withdrawalDlg.Title = "Withdraw";
Transaction transaction = new WithdrawalTransaction();
doFullTransaction(transaction, withdrawalDlg);
}
private void btnOK_Click(object sender, EventArgs e)
{
try
{
decimal.TryParse(txtAmount.Text, out amount);
// Create a new transaction
Transaction transaction = new WithdrawalTransaction(customer.Accounts[selectedAccount], amount);
transaction.DoTransaction();
// Add the transaction to the transaction history.
this.customer.TransactionHistory.Add(transaction);
// This will close the dialog with a positive result.
this.DialogResult = DialogResult.OK;
}
catch (AccountInactiveException exception)
{
MessageBox.Show(exception.Message, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
catch (NoSufficientFundsException exception)
{
MessageBox.Show(exception.Message, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
catch (InvalidTransactionAmtException exception)
{
// Make sure the input is numeric.
if (!decimal.TryParse(txtAmount.Text, out amount))
{
MessageBox.Show("Invalid amount. Please enter a numeric value.", "Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
else
{
MessageBox.Show(exception.Message, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
}
private void btnOK_Click(object sender, EventArgs e)
{
try
{
decimal.TryParse(txtAmount.Text, out amount);
// Create a new transaction
Transaction transaction = new WithdrawalTransaction(customer.Accounts[selectedAccount], amount);
transaction.DoTransaction();
// Add the transaction to the transaction history.
this.customer.TransactionHistory.Add(transaction);
// This will close the dialog with a positive result.
this.DialogResult = DialogResult.OK;
}
catch (AccountInactiveException exception)
{
MessageBox.Show(exception.Message, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
catch (NoSufficientFundsException exception)
{
MessageBox.Show(exception.Message, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
catch (InvalidTransactionAmtException exception)
{
// Make sure the input is numeric.
if (!decimal.TryParse(txtAmount.Text, out amount))
{
MessageBox.Show("Invalid amount. Please enter a numeric value.", "Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
else
{
MessageBox.Show(exception.Message, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
}
