Question

I have a problem on how to order a list.
I have a list of products and i sort them by price. But in my db i have two prices : price and offer.

I want to sort my products by price , BUT if offer is >0 then i want to sort by offer

I thought of this but it does not work:

list.OrderBy(p => p.offer != 0 ? p.offer : p.price );

Any ideas??

Answer 1

As someone has said, OrderBy doesn’t sort in place. It returns a IOrderedEnumerable (it’s something similar to an IEnumerable, but ordered 🙂 ).

If you want to sort in place (and you are using a List<>) do this:

list.Sort((p, q) => (p.offer != 0 ? p.offer : p.price).CompareTo(q.offer != 0 ? q.offer : q.price));