I am tring to call block from the controller action but its not working and throwing me an error as
Exception #0 (OutOfBoundsException): No element found with ID 'left'.
$this->_addContent($this->_view->getLayout()->createBlock('\Demo\Test\Block\Adminhtml\Method\Edit'));
$this->_addLeft($this->_view->getLayout()->createBlock('\Demo\Test\Block\Adminhtml\Method\Edit\Tabs'));
Can you please tell me how can i achieve above things?
First of all, you should not add blocks from the controller. Use the layout file for that.
But if you do, you need to call $this->_view->loadLayout() prior to adding your blocks.
and make sure your layout file has the main tag looking like this:
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="admin-2columns-left" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
layout="admin-2columns-left" ensures you that the left column exists.