How to get block from controller in magento 2

Question

I want to get block Magento\Catalog\Block\Product\ProductList\Toolbar, I tried this code but it not work and show error

Type Error occurred when creating the object: `Vendor/Module/Block/Search`

My code

$resultPage = $this->layoutFactory->create();
$blockToolbar = $resultPage->getLayout()->createBlock('Magento\Catalog\Block\Product\ProductList\Toolbar');
var_dump($blockToolbar->getCurrentOrder());
exit;

I tried " Code phtml " in phtml file, it works

Code phtml

$blockToolbar = $block->getLayout()->createBlock('Magento\Catalog\Block\Product\ProductList\Toolbar');
var_dump($blockToolbar->getCurrentOrder());exit;

UPDATE

I used $objectManager and it works

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$blockToolbar = $objectManager->create('Magento\Catalog\Block\Product\ProductList\Toolbar');
var_dump($blockToolbar->getCurrentOrder());
exit;

Answer 1

You can call block function using below ways :

Method 1:

protected $layoutFactory;

public function __construct(
   ...
   \Magento\Framework\View\LayoutFactory $layoutFactory,
   ...
) {
   ...
   $this->layoutFactory = $layoutFactory;
   ...
}

Then you can instantiate a block like this:

$block = $this->layoutFactory->create()->createBlock('Magento\Catalog\Block\Product\ProductList\Toolbar');
var_dump($block->getCurrentOrder());exit;

Method 2 :

$block = $this->getLayout()->createBlock('Magento\Catalog\Block\Product\ProductList\Toolbar');    
var_dump($block->getCurrentOrder());exit;

Answer 2

You should return value, Follow below code

$resultPage = $this->resultPageFactory->create();
$blockToolbar = $resultPage->getLayout()->createBlock('Magento\Catalog\Block\Product\ProductList\Toolbar');
return $resultPage;