New to the IDE, trying some basic concepts.
Something I'm struggling with is calling my custom methods from
<page-name>.razor.cs as detailed on page Invoke method (Blazor)
Brand new project, create single page. Open the .cs file in VS2019. Add the 'Sum' method and attempt to invoke it. As pictured below, my method doesn't show. I've reloaded, refreshed edited in Notepad++ and nothing exposes it.
What am I doing wrong?