private void registerButton_Click(object sender, EventArgs e) { // Hide messages registerErrorLabel.Visible = false; registerPasswordLabel.Visible = false; string username = registerUsernameTextBox.Text; // Reverse username as password char[] charArray = username.ToCharArray(); Array.Reverse(charArray); string password = new string(charArray); // Insert customer if (client.InsertCustomer(username, password)) { // On success show new password registerPasswordLabel.Text = $"Your password: {password}"; registerPasswordLabel.Visible = true; } // If unavailable show error message else { registerErrorLabel.Visible = true; } }