public void CreateCustomer(CustomerModel customer)
        {
            var customerDb = _customerMapper.ToCustomer(customer);

            using (var wpfAppContext = new WpfAppContext())
            {
                wpfAppContext.Customers.Add(customerDb);
                wpfAppContext.SaveChanges();
            }
        }
 public void Save()
 {
     _context.SaveChanges();
 }