public void TopUp(int amount)
{
_balance += amount;
var args = new WalletEventArgs($"The wallet was topped up on {amount} of money", amount);
ToppedUp?.Invoke(this, args); // null condition operator
}
public void Withdraw(int amount)
{
if (_balance < amount)
{
var args = new WalletEventArgs($"Not enough money on wallet's balance", amount);
Withdrawn?.Invoke(this, args);
}
else
{
_balance -= amount;
var args = new WalletEventArgs($"{amount} of money was withdrawned from the wallet", amount);
Withdrawn?.Invoke(this, args);
}
}
