Assume that I have thes Class:
public class Order
{
int OrderId {get; set;}
string CustomerName {get; set;}
}
I declare below variables, too
Func<Order, bool> predicate1 = t=>t.OrderId == 5 ;
Func<Order, bool> predicate2 = t=>t.CustomerName == "Ali";
Is there any way that concatenate these variables(with AND/OR) and put the result in 3rd variable? for example:
Func<Order, bool> predicate3 = predicate1 and predicate2;
or
Func<Order, bool> predicate3 = predicate1 or predicate2;
And:
Func<Order, bool> predicate3 =
order => predicate1(order) && predicate2(order);
Or:
Func<Order, bool> predicate3 =
order => predicate1(order) || predicate2(order);
来源：https://stackoverflow.com/questions/17088268/concatenate-two-func-delegates