1C-Bitrix. How to sort products by price (ascending/descending)?

Question

1C-Bitrix

Good afternoon. Can you please tell me how to sort products by price (ascending/descending)?
Are there any examples?
Interested in the implementation of the example, let's say Citylink

Thanks in advance for the answers!

Answer 1

there is no regular method, you have to twist the crutch.

Answer 2

For the component catalog.section
Parameters

"ELEMENT_SORT_FIELD" => $_SESSION['sort'] ? $_SESSION['sort'] : $arParams["ELEMENT_SORT_FIELD"],
        "ELEMENT_SORT_ORDER" => $_SESSION['order'] ? $_SESSION['order'] : $arParams["ELEMENT_SORT_ORDER"],
        "ELEMENT_SORT_FIELD2" => $arParams["ELEMENT_SORT_FIELD2"],
        "ELEMENT_SORT_ORDER2" => $arParams["ELEMENT_SORT_ORDER2"],

$_SESSION['sort'] is CATALOG_PRICE_'. [current price zone, usually BASE]
In $_SESSION['order'] - asc or desc