c# - refresh load redirection logout -

i have asp.net mvc application. have authentification form : used static class contains static boolean indicates connectivty of user:

 public static class comptemodels     {         private static bool connected = false;          public static bool connected         {             { return comptemodels.connected; }             set { comptemodels.connected = value; }         }     } 

in controller have snippet:

 public actionresult index()         {             if (upload.models.comptemodels.connected)             {                 return view();             }              else return redirecttoaction("login", "account");         }          public actionresult logout()         {             upload.models.comptemodels.connected = false;             return redirecttoaction("login", "account");           } 

the problem : when log in account logout if did come previous page account page reopened (the redirection home page didn't work)
except refresh page. problem , how can coorect code?

the "problem" page cached , user seeing cached page. isn't making request site. if don't want of site cached load page server can add following attribute of controllers or base controller if have one:

[outputcache(nostore = true, duration = 0)] 

you lose bandwidth saving cache if have highly sensitive data inside site might worthwhile.

i have seen other "hacks" involve making ajax request on every page load , if fails due not being authorized redirects login screen.