public Customers InsertCustomer(Customers customer) {
var northwind = getContext();

northwind.AddObject("Customers", customer);
northwind.SaveChanges(true);

return (customer);
}

public Boolean DeleteCustomer(Customers customer) {
var northwind = getContext();

northwind.AttachTo("Customers", customer);
northwind.DeleteObject(customer);
northwind.SaveChanges(true);

return (true);
}
