How to use CAjax::GetForm()?

Question

1C-Bitrix

I use CAjax::GetForm()in component template catalog.filter.

<?=CAjax::GetForm(
'name="ajaxform" action="formtest.php" method="POST"', 
'formtest',
CAjax::GetComponentID('bitrix:news.list', '.default', ''))?>

In the formtest container, which contains a call to the bitrix:news.list .default component, on submit, the html of the entire page is inserted, and not just the html of the component. How can I force this to be placed in the component's html container?

Answer 1

I suggest a course of action:

???

PROFIT!

Answer 2

Above condition
$APPLICATION->RestartBuffer();
From below by condition
die();