private void Button_Click(object sender, RoutedEventArgs e) { if ((UserNametxt.Text == "") || (UserNametxt.Text == "") || (PasswordTxt.Password == "") || (adresstxt.Text == "") || (phnetxt.Text == "") || (emailtxt.Text == "") || (Nictxt.Text == "")) { MessageBox.Show("Enter Complete Information"); } else { Customer cus = new Customer(UserNametxt.Text, PasswordTxt.Password, adresstxt.Text, phnetxt.Text, emailtxt.Text, Nictxt.Text, Gender.SelectedItem.ToString(), AgeTxt.Text); ServiceReference1.ServiceClient clientfortesting = new ServiceReference1.ServiceClient(); clientfortesting.CustomerRegistrationRequestCompleted += new EventHandler<ServiceReference1.CustomerRegistrationRequestCompletedEventArgs>(CustomerRegistrationRequestReturnFunction); clientfortesting.CustomerRegistrationRequestAsync(cus.username,cus.password,cus.email,cus.PhoneNumber,cus.NIC,cus.address,cus.Gender,cus.age); } }