title: asp.net core - How to pass variable from controller to filter
body: <p>I have a controller. On the controller's post method, there is a variable (an object variable) I want to pass to my action filter: the method:</p>
  
  <pre><code>public void OnActionExecuted(ActionExecutedContext context)...
  </code></pre>
  
  <p>Any suggestions on how  achieve this?</p>