protected void btnEmpty_Click1(object sender, EventArgs e)
    {
        if (ShoppingCart != null)
        {
            // Log activity "product removed" for all items in shopping cart
            string siteName = SiteContext.CurrentSiteName;
            if (!ShoppingCartControl.IsInternalOrder)
            {
                ShoppingCartControl.TrackActivityAllProductsRemovedFromShoppingCart(ShoppingCart, siteName, ContactID);
            }

            ShoppingCartInfoProvider.EmptyShoppingCart(ShoppingCart);

            ReloadData();
        }
    }