static void Main(string[] args)
{
var p1 = new Product() { Name = "P1" };
p1.AcceptChanges();
var c1 = new Customer() { FirstName = "A", LastName = "B" };
var o1 = new Order();
o1.Products.Add(p1);
c1.Orders.Add(o1);
c1.AcceptChanges();
c1.FirstName = "AA";
c1.AcceptChanges();
o1.Quantity = 10;
c1.AcceptChanges();
}
private void FixupCustomer(Customer previousValue)
{
if (previousValue != null && previousValue.Orders.Contains(this))
{
previousValue.Orders.Remove(this);
}
if (Customer != null)
{
if (!Customer.Orders.Contains(this))
{
Customer.Orders.Add(this);
}
}
}