public int CompareTo(object obj)
{
if (obj == null)
{
return(1);
}
Product p = obj as Product;
if (p == null)
{
return(1);
}
int result = Naam.CompareTo(p.Naam);
if (result == 0)
{
result = Prijs.CompareTo(p.Prijs);
}
return(result);
}
