How to Launch a Web Page From an ASP.NET Button. Developers can create buttons that launch new Websites from within a Web page, or they can make new website windows appear without user intervention.

Google’s web crawler doesn’t interact with buttons when indexing web pages, which may lead to content not getting discovered.

The other way is where Google has to watch out for a scroll event or a click to load more button and John said something like that is "usually something that GoogleBot tends not to do." ...