public void AddCustomer(Customer customer)
{
List <Customer> customers = GetAllCustomers();
customers.Add(customer);
JsonFileWritter.WriteCustomerToJson(customers, JsonFileName);
}
public IActionResult OnPost()
{
if (!ModelState.IsValid)
{
return(Page());
}
ViewData["Confirmation"] = "Confirmed";
JsonFileWritter.WriteCustomerToJson(customer);
return(RedirectToPage("/Index"));
}