model view controller - access to request querystring in mvc -

i have actionlink in view:

@html.actionlink("go", "showdetails", "shownews", new { id = 2 },null); 

and in routeconfig:

routes.maproute(             name:"newmap",             url: "{controller}/{action}/{id}",             defaults: new { controller = "shownews", action = "showdetails", id = urlparameter.optional }         ); 

when click on actionlink , request query string cod in controller

public actionresult showdetails()     {         int id;         if (!int.tryparse(request.querystring["id"], out id))         {             id = 1;         }          var data = new databasecontext();         var news = data.newsinfo.where(x => x.id == id).firstordefault();          return view(news);     } 

but request return me return 1 (i send 2 actionlink) when go address :

localhost/shownews/showdetails?id=2  

request.querystring pars 2 value(this true) problem?