Magento 2 - widget, add css to block

[KennedyA]

I want to insert a css fom the widget block in the magento head but cannot achieve this, i am using:

namespace Vendor\Module\Block\Widget;

use Magento\Framework\View\Element\Template;
use Magento\Widget\Block\BlockInterface;

class Sliderimage extends Template implements BlockInterface
{
protected function _construct()
{
parent::_construct();

$this->setTemplate('widget/sliderimage.phtml');
}

/**
* @return $this
*/
protected function _prepareLayout()
{
$this->pageConfig->addPageAsset('Vendor_Module::css/sliderimage.css');

return parent::_prepareLayout();
}
}

What am i missing?

Thank you,
Damien.

[Sunil Patel]

Hello @KennedyA 

protected function _construct() {
 $om = \Magento\Framework\App\ObjectManager::getInstance();
 $page = $om->get('Magento\Framework\View\Page\Config');
 $page->addPageAsset('Vendor_Extension::css/yourstyles.css');
 }

please check above code

Hope it will help you

[Bhanu Periwal]

Hi @KennedyA 

Kindly refer below url :
https://webkul.com/blog/magento2-how-to-add-css-and-js-file-in-module/

It will help you to resolve you issue.

If issue resolve, Please click on 'Kudos' & Accept as Solution!

[KennedyA]

Hi, thank you but i want to add this asset only on page displaying the
widget.