How to include or exclude pages or posts from WordPress search result

How to include or exclude pages or posts from WordPress search result

Display specific posts in the search result

function SearchFilter($query) {
if ($query->is_search) {
$query->set('post_type', 'post');
}
return $query;
}

add_filter('pre_get_posts','SearchFilter');

also, we can set

$query->set('cat','8,15');
$query->set('post_type', array('video-camera', 'software-solution','post') ); // id of page or post

If we are Custom Post Types plugin than edit custom post and set
Exclude From Search = True
from advanced options