title: Null conditional operator not working (shows "invoke is not a member of xxx")
body: <p>I can't seem to find anyone else having this same issue. I have seen that you can use null-conditional operators in VB.NET. E.g.</p>
  
  <pre><code>SendNews?.Invoke("Just in: A newsworthy item...")
  </code></pre>
  
  <p>However, I'm getting "invoke is not a member of SendNews"</p>
  
  <p>I have tried setting "Option Infer On" but still getting this error.</p>
  
  <p>Any ideas? (using .net 4.6.1)</p>