ASP.NET MVC - HtmlHelper and Session data

Question

I want to create a helper that searches through session data, Preferably something like this:

public static bool CheckForModerator(this HtmlHelper htmlHelper)
{
    return Session["isAdmin"];
}

But i cannot access Session[] data. I tried looking through htmlHelper, but i cannot find Session there either. What do i need to do in order to access Session data?

Answer 1

using System.Web;

and then

HttpContext context = HttpContext.Current;
return context.Session["isAdmin"];

Answer 2

Prefer (bool)htmlHelper.ViewContext.HttpContext.Session["IsAdmin"]