New way of loading a menu from json file in MVC BaseController

newWayLoadJsonFileMVC.cs

public class BaseController : System.Web.Mvc.Controller
{
  public BaseController()
  {
    Initialize();
  }
  
  protected void Initialize()
  {
    // ...
    // GetMenu();
  }
  
  protected override void OnActionExecuted(ActionExecutedContext filterContext)
  {
    base.OnActionExecuted(filterContext);
    
    this.GetMenu();
  }
  
  private void GetMenu()
  {
    // Do something with query string and render differently...
    // Request.QueryString is not null!!!
    NavGenertor navGenerator = new NavGenerator();
    App.Menu = navGenerator.GetTopNav();
  }
}