title: how can i display product's custom field in wp-admin/edit.php?post_type=product ( product listing table in admin ) woocommerce
body: <p>I have added some custom fields in woocommerce when adding product. Now i want to display those custom fields in product listing page ( wp-admin/edit.php?post_type=product ). I also want to quick edit and save like other values can be edit and save in listing page.</p>
  
  <p>I tried bellow code but it did not work.</p>
  
  <pre><code>add_filter( 'manage_edit-product', 'show_product_order' );
  function show_product_order($columns){
     $new_columns = (is_array($columns)) ? $columns : array();
     unset( $new_columns['order_actions'] );
  
     $new_columns['product_order'] = 'Product Order';
  
     $new_columns['order_actions'] = $columns['order_actions'];
     return $new_columns;
  }
  </code></pre>
  
  <p>I also tried below code but it did not worked too.</p>
  
  <pre><code>add_action( 'woocommerce_product_options_general_product_data', 'woocommerce_general_product_data_custom_field' );
  function woocommerce_general_product_data_custom_field() {
  
      global $woocommerce, $post;
      echo '&lt;div class="options_group"&gt;';
      woocommerce_wp_checkbox(
          array(
               'id' =&gt; 'product_order',
               'wrapper_class' =&gt; 'checkbox_class',
               'label' =&gt; __('Order for Product', 'woocommerce' ),
               'description' =&gt; __( 'Order for Product', 'woocommerce' )
          )
      );
      echo '&lt;/div&gt;';
  }
  </code></pre>
  
  <p>i also reffered this post <a href="https://stackoverflow.com/questions/13683162/woocommerce-show-custom-column">WooCommerce show custom column</a> but i did not succeed to get solution
  Please help.</p>