protected void registerButton_Click(object sender, EventArgs e) { if (RegistrationDB.isCustomerExist(userNameTextBox.Text)) { failedLabel.Visible = true; return; } failedLabel.Visible = false; string encryptedPwd = LoginUtility.GetEncryptedValue(passwordTextBox.Text); RegistrationDB.AddCustomer(firstNameTextBox.Text, lastNameTextBox.Text, phoneTextBox.Text, cityTextBox.Text, userNameTextBox.Text, encryptedPwd); successLabel.Visible = true; }