How to display the required number of infoblock elements using a getlist?

Question

1C-Bitrix

Records are taken from the infoblock - slides, now 10 are displayed. It is
necessary that you yourself be able to set the number of displayed elements on the page.
How to do? Optional in component call) Component
call:

<?$APPLICATION->IncludeComponent(
  "normik:slider",
  "protemplate",
  Array(
    "BACKGROUD_VIDEO" => "",
    "IBLOCK_TYPE" => "content",
    "IBLOCK_ID" => "32",
    "PARENT_SECTION" => "",
    "PARENT_SECTION_CODE" => "",
  )
);?>

componetn.php

<?
if(!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true) die();
/** @var CBitrixComponent $this */
/** @var array $arParams */
/** @var array $arResult */
/** @var string $componentPath */
/** @var string $componentName */
/** @var string $componentTemplate */
/** @global CDatabase $DB */
/** @global CUser $USER */
/** @global CMain $APPLICATION */

/** @global CIntranetToolbar $INTRANET_TOOLBAR */
global $INTRANET_TOOLBAR;

CPageOption::SetOptionString("main", "nav_page_in_session", "N");

if(!isset($arParams["CACHE_TIME"]))
  $arParams["CACHE_TIME"] = 36000000;

$arParams["IBLOCK_TYPE"] = trim($arParams["IBLOCK_TYPE"]);
if(strlen($arParams["IBLOCK_TYPE"])<=0)
  $arParams["IBLOCK_TYPE"] = "news";
$arParams["IBLOCK_ID"] = trim($arParams["IBLOCK_ID"]);
$arParams["PARENT_SECTION"] = intval($arParams["PARENT_SECTION"]);
$arParams["INCLUDE_SUBSECTIONS"] = false;

$arrFilter = array();
$arNavigation = array();
$arResult = array();

$arParams["CACHE_FILTER"] = $arParams["CACHE_FILTER"]=="Y";
if(!$arParams["CACHE_FILTER"] && count($arrFilter)>0)
  $arParams["CACHE_TIME"] = 0;

$arParams["USE_PERMISSIONS"] = $arParams["USE_PERMISSIONS"]=="Y";
if(!is_array($arParams["GROUP_PERMISSIONS"]))
  $arParams["GROUP_PERMISSIONS"] = array(1);

$bUSER_HAVE_ACCESS = !$arParams["USE_PERMISSIONS"];
if($arParams["USE_PERMISSIONS"] && isset($GLOBALS["USER"]) && is_object($GLOBALS["USER"]))
{
  $arUserGroupArray = $USER->GetUserGroupArray();
  foreach($arParams["GROUP_PERMISSIONS"] as $PERM)
  {
    if(in_array($PERM, $arUserGroupArray))
    {
      $bUSER_HAVE_ACCESS = true;
      break;
    }
  }
}

if($this->StartResultCache(false, array(($arParams["CACHE_GROUPS"]==="N"? false: $USER->GetGroups()), $bUSER_HAVE_ACCESS, $arNavigation, $arrFilter)))
{
  if(!CModule::IncludeModule("iblock"))
  {
    $this->AbortResultCache();
    ShowError(GetMessage("IBLOCK_MODULE_NOT_INSTALLED"));
    return;
  }
  if(is_numeric($arParams["IBLOCK_ID"]))
  {
    $rsIBlock = CIBlock::GetList(array(), array(
      "ACTIVE" => "Y",
      "ID" => $arParams["IBLOCK_ID"],
    ));
  }
  else
  {
    $rsIBlock = CIBlock::GetList(array(), array(
      "ACTIVE" => "Y",
      "CODE" => $arParams["IBLOCK_ID"],
      "SITE_ID" => SITE_ID,
    ));
  }
  if($iBlock = $rsIBlock->GetNext())
  {
    //SELECT
    $arSelect = array(
      "ID",
      "IBLOCK_ID",
      "IBLOCK_SECTION_ID",
      "NAME",
      "ACTIVE_FROM",
      "DETAIL_PAGE_URL",
      "DETAIL_TEXT",
      "DETAIL_TEXT_TYPE",
      "PREVIEW_TEXT",
      "PREVIEW_TEXT_TYPE",
      "PREVIEW_PICTURE",
      "PROPERTY_IMG_XLARGE",
      "PROPERTY_IMG_LARGE",
      "PROPERTY_IMG_SMALL",
      "PROPERTY_IMG_XSMALL",
      "PROPERTY_IMG_XSMALL_LAND",
      "PROPERTY_URL",
      "PROPERTY_DESCRIPTION",
    );
    //WHERE
    $arFilter = array (
      "IBLOCK_ID" => $iBlock["ID"],
      "IBLOCK_LID" => SITE_ID,
      "ACTIVE" => "Y",
      "INCLUDE_SUBSECTIONS" => "Y",
    );

    $arParams["PARENT_SECTION"] = CIBlockFindTools::GetSectionID(
      $arParams["PARENT_SECTION"],
      $arParams["PARENT_SECTION_CODE"],
      array(
        "GLOBAL_ACTIVE" => "Y",
        "IBLOCK_ID" => $iBlock["ID"],
      )
    );

    if($arParams["PARENT_SECTION"]>0)
    {
      $arFilter["SECTION_ID"] = $arParams["PARENT_SECTION"];
    }

    $obParser = new CTextParser;
    $arResult["ITEMS"] = array();
    $arResult["ELEMENTS"] = array();
    $rsElement = CIBlockElement::GetList(array("SORT"=>"ASC"), $arFilter, false, array(), $arSelect);
    $rsElement->SetUrlTemplates($arParams["DETAIL_URL"], "", $arParams["IBLOCK_URL"]);
    while($obElement = $rsElement->GetNextElement())
    {
      $arItem = $obElement->GetFields();

      if($arParams["PREVIEW_TRUNCATE_LEN"] > 0)
        $arItem["PREVIEW_TEXT"] = $obParser->html_cut($arItem["PREVIEW_TEXT"], $arParams["PREVIEW_TRUNCATE_LEN"]);

      if(strlen($arItem["ACTIVE_FROM"])>0)
        $arItem["DISPLAY_ACTIVE_FROM"] = CIBlockFormatProperties::DateFormat($arParams["ACTIVE_DATE_FORMAT"], MakeTimeStamp($arItem["ACTIVE_FROM"], CSite::GetDateFormat()));
      else
        $arItem["DISPLAY_ACTIVE_FROM"] = "";

      $ipropValues = new \Bitrix\Iblock\InheritedProperty\ElementValues($arItem["IBLOCK_ID"], $arItem["ID"]);
      $arItem["IPROPERTY_VALUES"] = $ipropValues->getValues();

      if(isset($arItem["PREVIEW_PICTURE"]))
      {
        $arItem["PREVIEW_PICTURE"] = (0 < $arItem["PREVIEW_PICTURE"] ? CFile::GetFileArray($arItem["PREVIEW_PICTURE"]) : false);
        if ($arItem["PREVIEW_PICTURE"])
        {
          $arItem["PREVIEW_PICTURE"]["ALT"] = $arItem["IPROPERTY_VALUES"]["ELEMENT_PREVIEW_PICTURE_FILE_ALT"];
          if ($arItem["PREVIEW_PICTURE"]["ALT"] == "")
            $arItem["PREVIEW_PICTURE"]["ALT"] = $arItem["NAME"];
          $arItem["PREVIEW_PICTURE"]["TITLE"] = $arItem["IPROPERTY_VALUES"]["ELEMENT_PREVIEW_PICTURE_FILE_TITLE"];
          if ($arItem["PREVIEW_PICTURE"]["TITLE"] == "")
            $arItem["PREVIEW_PICTURE"]["TITLE"] = $arItem["NAME"];
        }
      }
      if(isset($arItem["DETAIL_PICTURE"]))
      {
        $arItem["DETAIL_PICTURE"] = (0 < $arItem["DETAIL_PICTURE"] ? CFile::GetFileArray($arItem["DETAIL_PICTURE"]) : false);
        if ($arItem["DETAIL_PICTURE"])
        {
          $arItem["DETAIL_PICTURE"]["ALT"] = $arItem["IPROPERTY_VALUES"]["ELEMENT_DETAIL_PICTURE_FILE_ALT"];
          if ($arItem["DETAIL_PICTURE"]["ALT"] == "")
            $arItem["DETAIL_PICTURE"]["ALT"] = $arItem["NAME"];
          $arItem["DETAIL_PICTURE"]["TITLE"] = $arItem["IPROPERTY_VALUES"]["ELEMENT_DETAIL_PICTURE_FILE_TITLE"];
          if ($arItem["DETAIL_PICTURE"]["TITLE"] == "")
            $arItem["DETAIL_PICTURE"]["TITLE"] = $arItem["NAME"];
        }
      }

      $arResult["ITEMS"][] = $arItem;
      $arResult["ELEMENTS"][] = $arItem["ID"];
    }
    $this->IncludeComponentTemplate();
  }
  else
  {
    $this->AbortResultCache();
    @define("ERROR_404", "Y");
    if($arParams["SET_STATUS_404"]==="Y")
      CHTTP::SetStatus("404 Not Found");
  }
}

?>

.parameters.php

<?
if (!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true) die();

if(!CModule::IncludeModule("iblock"))
  return;

$arTypesEx = CIBlockParameters::GetIBlockTypes(array("-"=>" "));

$arIBlocks=array();
$db_iblock = CIBlock::GetList(array("SORT"=>"ASC"), array("SITE_ID"=>$_REQUEST["site"], "TYPE" => ($arCurrentValues["IBLOCK_TYPE"]!="-"?$arCurrentValues["IBLOCK_TYPE"]:"")));
while($arRes = $db_iblock->Fetch())
  $arIBlocks[$arRes["ID"]] = $arRes["NAME"];

$arComponentParameters = array(
   "GROUPS" => array(
   ),
   "PARAMETERS" => array(
      "BACKGROUD_VIDEO" => array(
         "PARENT" => "BASE",
         "NAME" => 'Выберите фоновое видео',
         "TYPE" => "FILE",
         "FD_TARGET" => "F",
         "FD_EXT" => 'mp4',
         "FD_UPLOAD" => true,
         "FD_USE_MEDIALIB" => true,
         "FD_MEDIALIB_TYPES" => Array('video')
      ),
  "IBLOCK_TYPE" => array(
         "PARENT" => "BASE",
     "NAME" => "Тип информационного блока",
      "TYPE" => "LIST",
      "VALUES" => $arTypesEx,
      "DEFAULT" => "content",
      "REFRESH" => "Y",
    ),
    "IBLOCK_ID" => array(
      "PARENT" => "BASE",
      "NAME" => "Код информационного блока",
      "TYPE" => "LIST",
      "VALUES" => $arIBlocks,
      "DEFAULT" => '={$_REQUEST["ID"]}',
      "ADDITIONAL_VALUES" => "Y",
      "REFRESH" => "Y",
    ),
    "PARENT_SECTION" => array(
      "PARENT" => "ADDITIONAL_SETTINGS",
      "NAME" => "ID раздела",
      "TYPE" => "STRING",
      "DEFAULT" => '',
    ),
    "PARENT_SECTION_CODE" => array(
      "PARENT" => "ADDITIONAL_SETTINGS",
      "NAME" => "Код раздела",
      "TYPE" => "STRING",
      "DEFAULT" => '',
    ),
   )
);
?>

Answer 1

We have accumulated the news list component, but haven’t figured it out :)
Apparently you want the limit to be in CNT, then describe it in the parameters, and add the limits in the get list

$rsElement = CIBlockElement::GetList(array("SORT"=>"ASC"), $arFilter, false, array('nTopCount' => $arParams['CNT']), $arSelect);