/// <remarks>
        /// Validates user input and if OK, stores new CustomerBO in DB
        /// </remarks>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnConfirm_Click(object sender, RoutedEventArgs e)
        {
            txtErrorCustomer.Content = "";
            string txtCompanyNameToAdd = txtCompanyName.Text;
            string txtCompanyContactNameToAdd = txtCompanyContactName.Text;

            if (String.IsNullOrEmpty(txtCompanyNameToAdd))
            {
                txtErrorCustomer.Content = "'Organisatsioon:' Väärtus on tühi!";
                return;
            }
            if (String.IsNullOrEmpty(txtCompanyContactNameToAdd))
            {
                txtErrorCustomer.Content = "'Kontaktisik:' Väärtus on tühi!";
                return;
            }
            CustomerService customerSrv = new CustomerService();
            int newCustomerId = customerSrv.addNew(txtCompanyNameToAdd, txtCompanyContactNameToAdd);

            if (0 == newCustomerId)
            {
                txtErrorCustomer.Content = "Klient ei ole loodud! Proovi uuesti!";
                return;
            }

            txtErrorCustomer.Content = "";

            //GoTo CustomerUpdateV with  freshly stored customer details
            CustomerBO customer = customerSrv.getCustomerById(newCustomerId);
            this.NavigationService.Navigate(new CustomerUpdateV(customer, true));
        }
 private static void fullFillCustomerTable()
 {
     CustomerService customerSrv = new CustomerService();
     customerSrv.addNew("ABC OÜ", "Anne");
     customerSrv.addNew("XYZ AS", "Daria");
     List<CustomerBO> customers = customerSrv.getAllFromTable();
     Assert.AreNotEqual(0, customers.Count(), string.Format("There should be values in 'Customer' Table."));
 }