/// <summary>
/// Event handler raised when the user places the bet for the current bettor
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void OnPlaceBet(object sender, RoutedEventArgs e)
{
try
{
//Obtain the bet amount
int betAmount = int.Parse(_txtBetAmount.Text);
//Determine the racer the bet is on
ComboBoxItem racerItem = _cmbRaceHoundNo.SelectedItem as ComboBoxItem;
int racerNo = int.Parse(racerItem.Content.ToString());
//Ask the current bettor to place a bet
//Calls PlaceBet method and returns an int value
int switchValue = _crtSelBettor.PlaceBet(betAmount, racerNo);
//Switch statements to determine exception error handling or to continue to update labels.
switch (switchValue)
{
//Checks if bet is less than 5
case 0:
throw new InvalidOperationException("Bet amount must be greater than or equal to 5");
//User defined exception that checks if the bettor has enough money
case 1:
throw new InsufficientFundsException($"{_crtSelBettor.Name} does not have enough money to place this bet.");
//updates the bet labels changing bettor name and the amount they bet. Also says that a bettor has now placed a bet.
case 2:
UpdateBettorLabels(_crtSelBettor);
break;
}
}
//The follwoing are the catch operators for the previous exception try statements
catch (InvalidOperationException ioEx)
{
_txtBetAmount.Text = "N/A";
MessageDialog msgDlg = new MessageDialog(ioEx.Message);
await msgDlg.ShowAsync();
}
catch (InsufficientFundsException ifEx)
{
_txtBetAmount.Text = "N/A";
MessageDialog msgDlg = new MessageDialog(ifEx.Message);
await msgDlg.ShowAsync();
}
catch (FormatException)
{
_txtBetAmount.Text = "N/A";
MessageDialog msgDlg = new MessageDialog("Invalid Input\nPlease enter a certain amount of money within your balanace.");
await msgDlg.ShowAsync();
}
catch (NullReferenceException)
{
MessageDialog msgDlg = new MessageDialog("Please select a better and place a bet before placing bets");
await msgDlg.ShowAsync();
}
}
