asp.net mvc 4 - Catch 404 Error in MVC4 -

i have problem cacting http error 404.0 - not found. have turned on

<customerrors mode="on" defaultredirect="~/error/general">       <error statuscode="404" redirect="~/error/httperror404" />       <error statuscode="500" redirect="~/error/httperror500" />     </customerrors> 

in web.config. problem still exist. have tried solution( never reaches method):

protected void application_error()     {       var exception = server.getlasterror();       var httpexception = exception httpexception;       response.clear();       server.clearerror();       var routedata = new routedata();       routedata.values["controller"] = "errors";       routedata.values["action"] = "general";       routedata.values["exception"] = exception;       response.statuscode = 500;       if (httpexception != null)       {         response.statuscode = httpexception.gethttpcode();         switch (response.statuscode)         {           case 403:             routedata.values["action"] = "httperror404";             break;           case 404:             routedata.values["action"] = "httperror404";             break;         }       }        icontroller errorscontroller = new errorcontroller();       var rc = new requestcontext(new httpcontextwrapper(context), routedata);       errorscontroller.execute(rc);     } 

provided @darin dimitrov

this controller:

public class errorcontroller : controller   {      public actionresult httperror404(string error)     {       viewdata["title"] = "sorry, error occurred while processing request. (404)";       viewdata["description"] = error;       return view("index");     }      public actionresult httperror500(string error)     {       viewdata["title"] = "sorry, error occurred while processing request. (500)";       viewdata["description"] = error;       return view("index");     }       public actionresult general(string error)     {       viewdata["title"] = "sorry, error occurred while processing request.";       viewdata["description"] = error;       return this.view();      } 

okay found solution @alistair-findlay , this website. how web.config looks now:

<system.web>     <customerrors mode="on" defaultredirect="~/error/general" redirectmode="responserewrite">          </customerrors>  </system.web>   <system.webserver> <httperrors errormode="detailed" defaultresponsemode="redirect">       <clear/>       <error statuscode="404" path="/error/httperror404"/>     </httperrors>    </system.webserver 

and global.asax.cs:

  protected void application_error()     {        if (context.iscustomerrorenabled)         showcustomerrorpage(server.getlasterror());      }     private void showcustomerrorpage(exception exception)     {       var httpexception = exception httpexception ?? new httpexception(500, "internal server error", exception);        response.clear();       var routedata = new routedata();       routedata.values.add("controller", "error");       routedata.values.add("fromapperrorevent", true);        switch (httpexception.gethttpcode())       {         case 403:           routedata.values.add("action", "httperror403");           break;          case 404:           routedata.values.add("action", "httperror404");           break;          case 500:           routedata.values.add("action", "httperror500");           break;          default:           routedata.values.add("action", "generalerror");           routedata.values.add("httpstatuscode", httpexception.gethttpcode());           break;       }        server.clearerror();        icontroller controller = new errorcontroller();       controller.execute(new requestcontext(new httpcontextwrapper(context), routedata));     } 

and lastly:

 public class errorcontroller : controller   {      public actionresult httperror403(string error)     {       viewbag.description = error;       return this.view();     }