// on selecting item from combo-dropdown
private void comboBox_accounts_SelectedIndexChanged(object sender, EventArgs e)
{
int index = comboBox_accounts.SelectedIndex; // selected account
label_balance.Text = accounts[index].Balance.ToString("c"); // update current balance
textBox_amount.Text = ""; // clear the amount
// update relevant info
if (accounts[index].GetType().Name == "SavingsAccount")
{
label_overdraft_minBalance.Text = "Min Balance: ";
label_overdraft_minBalance.Tag = "Min Balance";
SavingsAccount s = (SavingsAccount)accounts[index];
label_odl_minB.Text = s.MinimumBalance.ToString("c");
}
else
{
label_overdraft_minBalance.Text = "Overdraft Limit: ";
label_overdraft_minBalance.Tag = "OverdraftLimit";
CheckingAccount c = (CheckingAccount)accounts[index];
label_odl_minB.Text = c.OverdraftLimit.ToString("c");
}
}
private void button_addMonthlyInterest_Click(object sender, EventArgs e)
{
// add monthly interest in all accounts
foreach (BasicAccount account in accounts)
{
if (account.GetType().Name == "SavingsAccount")
{
SavingsAccount s = (SavingsAccount)account;
s.AddMonthlyInterest();
account.Balance = s.Balance; // update balance
}
else
{
CheckingAccount c = (CheckingAccount)account;
c.AddMonthlyInterest();
account.Balance = c.Balance;
}
}
UpdateList(); // udpate list
comboBox_accounts.Text = "Account#";
label_odl_minB.Text = "";
label_balance.Text = ""; // clear current balance
textBox_amount.Text = ""; // clear the amount
}