private void button2_Click(object sender, EventArgs e) { if (userNum != -1 && int.TryParse(textBox2.Text, out int money)) { proxy.Withdraw(money, userNum); } }
private static void Main(string[] args) { Console.WriteLine("Observer Pattern"); // Subject var savingsAccount = new BankAccount("Savings Account"); // Create Concrete Observers var homer = new BankClient("Homer Simpson", savingsAccount); var marge = new BankClient("Marge Simpson", savingsAccount); // Attach observers savingsAccount.Attach(homer); savingsAccount.Attach(marge); // Lets observe the transactions homer.Deposit(100); marge.Withdraw(50); homer.Withdraw(51); marge.Deposit(-100); // Final value should be $350 marge.Deposit(300); Console.ReadLine(); }