How to get List of All Stores in Admin Form

Here we will learn, How to get list of all Stores in Admin Form in Magento 2.0.x

You need to add the field in Form.php file.
Open your Form.php file: Webkul/Custom/Block/Adminhtml/Customfield/Edit/Form.php;

<?php
    namespace Webkul\Custom\Block\Adminhtml\Customfield\Edit;

    class Form extends \Magento\Backend\Block\Widget\Form\Generic
    {
        /**
         * @var \Magento\Store\Model\System\Store
         */
        protected $_systemStore;
        
        /**
         * Core registry
         *
         * @var \Magento\Framework\Registry
         */
        protected $_coreRegistry;

        /**
         * @param \Magento\Backend\Block\Template\Context $context
         * @param \Magento\Framework\Registry $registry
         * @param \Magento\Framework\Data\FormFactory $formFactory
         * @param \Magento\Store\Model\System\Store $systemStore
         * @param array $data
         */
        public function __construct(
            \Magento\Backend\Block\Template\Context $context,
            \Magento\Framework\Registry $registry,
            \Magento\Framework\Data\FormFactory $formFactory,
            \Magento\Store\Model\System\Store $systemStore,
            array $data = []
        ) {
            $this->_systemStore = $systemStore;
            $this->_coreRegistry = $registry;
            parent::__construct($context, $registry, $formFactory, $data);
        }

        /**
         * Init form
         *
         * @return void
         */
        protected function _construct()
        {
            parent::_construct();
            $this->setId('customfield_form');
            $this->setTitle(__('Fields Information'));
        }

        /**
         * Prepare form
         *
         * @return $this
         */
        protected function _prepareForm()
        {

            $form = $this->_formFactory->create(
                ['data' => ['id' => 'edit_form', 'enctype' => 'multipart/form-data', 'action' => $this->getData('action'), 'method' => 'post']]
            );
            $form->setHtmlIdPrefix('customfields_');

            $fieldset = $form->addFieldset(
                'base_fieldset',
                ['legend' => __('Field Information'), 'class' => 'fieldset-wide']
            );

             $fieldset->addField(
                'store',
                'multiselect',
                [
                    'name' => 'store[]',
                    'label' => __('Store View'),
                    'title' => __('Store View'),
                    'required' => true,
                    'values' => $this->_systemStore->getStoreValuesForForm(false, true)
                ]
            );
            
            $form->setUseContainer(true);
            $this->setForm($form);
            return parent::_prepareForm();
        }

    }