public List <Order> Lorder(Func <Order, bool> predicat = null)
{
List <Order> orders = XO.GetAllOrders();
if (predicat == null)
{
return(orders);
}
var v = from item in orders
where predicat(item) == true
select item.Clone();
return(v.ToList());
}
public List <Order> GetAllOrders()
{
return(XO.GetAllOrders());
}