custom link to single product page in woocommerce

also i am trying to add an icon on the product thumbnail which would add the product to the cart and using the below code:

<a href="?add-to-cart=<?php echo $products->ID; ?>"> <div class="cart-bag"></div></a>

but instead of adding items to cart it redirects to the home page.

please help!

please help ??

got it!

for product details page i added the link:
<?php echo '<a href="'.get_permalink($product_id).'"> <?php echo $product_obj-><button class="title overtext">view details</button></a>'; ?>

for add to cart icon on my product thumbnail added:

<?php global $product;

echo apply_filters( 'woocommerce_loop_add_to_cart_link',
	sprintf( '<a rel="nofollow" href="%s" data-quantity="%s" data-product_id="%s" data-product_sku="%s" class="%s"><strong><div class="cart-bag">..</div></a>',</strong>
		esc_url( $product->add_to_cart_url() ),
		esc_attr( isset( $quantity ) ? $quantity : 1 ),
		esc_attr( $product->id ),
		esc_attr( $product->get_sku() ),
		esc_attr( isset( $class ) ? $class : 'button' ),
		esc_html( $product->add_to_cart_text() )
	),
$product );?>

solved ??

Is it possible to add an option in admin panel to set some link to my Zoomify Gallery for each product that will be shown only for registered users ???
The Zoomify gallery will be hosted within the same e-commerce domain. Therefore, it will be not an external link, just a “custom” link to a private website area. In fact, my request would investigate the way to create a registered-user reserved link to link my HD Zoomify gallery

Thanks a lot