listview control used as a reference parameter - resulting "... does not contain a definition" error

When I'm directed to various links that cover topics, these links are generally discussing concepts, which are understood. But syntax is rarely shown. I've spent quite a bit of time trying to find where examples or syntax is discussed, and it's really hard to find. I cannot find anywhere where someone has an example of how to use a "ref listview" properly. One would think it should work similar to "ref form", but of course, it does not. Any help?