ASPX extension not showing when browing site

Question

i have created a web site with VS2013 IDE and my .net framework version is 4.5.

 

i select default webform template with no authentication and IDE generate project with many code and aspx file.

 

when i run my code from IDE then aspx extension is not showing. i comment this code in RouteConfig.cs file

 

//var settings = new FriendlyUrlSettings();

//settings.AutoRedirectMode = RedirectMode.Permanent;

//routes.EnableFriendlyUrls(settings);

 

but still aspx extension is not showing. so tell me what i need to change as a result aspx extension should be shown.