title: Redirect From Action Filter Attribute
body: <p>What is the best way to do a redirect in an <code>ActionFilterAttribute</code>.  I have an <code>ActionFilterAttribute</code> called <code>IsAuthenticatedAttributeFilter</code> and that checked the value of a session variable.  If the variable is false, I want the application to redirect to the login page.  I would prefer to redirect using the route name <code>SystemLogin</code> however any redirect method at this point would be fine.</p>