Magento – Magento 2 – Render custom product collection via list.phtml

The product grid of a category page (frontend) is rendered via layout in catalog_category_view.xml.

Lets say I have a custom product collection (which I got via

ProductRepositoryInterface::getList($searchCriteria) method

in a custom block class and want to render this collection. The rendered result should be displayed as a product grid on frontend (just like any category page).

How can this be done ?

By looking into catalog_category_view.xml there are two significant lines, which are responsible for rendering a product collection:

<block class="Magento\Catalog\Block\Category\View" name="category.products" template="Magento_Catalog::category/products.phtml">
<block class="Magento\Catalog\Block\Product\ListProduct" name="category.products.list" as="product_list" template="Magento_Catalog::product/list.phtml">

How can I provide my custom product collection to these template files, so they render my collection ?

Correct me, if I am wrong on this.

This is how my block code looks like:

<?php
namespace Mod\Mod1\Block;
use Magento\Framework\View\Element\Template;
class Main extends Template
{
protected $_filterBuilder;
protected $_filterGroupArray;
protected $_filterGroupBuilder;
protected $_searchCriteriaBuilder;
protected $_productRepository;
protected $_productFactory;
protected $_list;

public function __construct(
    \Magento\Framework\View\Element\Template\Context $context,
    \Magento\Catalog\Api\ProductRepositoryInterface $productRepository,
    \Magento\Framework\Api\SearchCriteriaBuilder $searchCriteriaBuilder,
    \Magento\Framework\Api\Search\FilterGroupBuilder $filterGroupBuilder,
    \Magento\Framework\Api\FilterBuilder $filterBuilder,
    \Magento\Catalog\Model\ProductFactory $productFactory,
    array $data = [])
{
    $this->_productRepository = $productRepository;
    $this->_searchCriteriaBuilder = $searchCriteriaBuilder;
    $this->_filterGroupBuilder = $filterGroupBuilder;
    $this->_filterBuilder = $filterBuilder;
    parent::__construct($context, $data);
}

public function getLoadedProductCollection(){
    $searchCrit = $this->buildSearchCriteria('','','','','','5-',1);
    $list = $this->_productRepository->getList($searchCrit);
    return $list;
}
public function buildSearchCriteria(...){
....
return $searchCriteria;
}
}