ASP.Net MVC 404 File Not Found custom page

Question

Sorry, if question is not clear, but I need "file not found" custom page, not "Page not found". If you type at the end of url .html - it do not will go thru Routes.

I have route which catch all routes:

routes.MapRoute(
            name: "Default",
            url: "{*url}",
            defaults: new { controller = "Home", action = "Index", url = UrlParameter.Optional },
            constraints: new { Domain = new DomainsConstraint() }
        );

But how can I make custom page for file not found? If at the and of url I add for example .html - It will show me 404 file not found

Answer 1

Simply set error configuration in web.config file

Web.config

 <customErrors mode="On" defaultRedirect="~/Error">
          <error redirect="~/Controller/Error" statusCode="404" />
    </customErrors>

Controller

public ActionResult Error(){
   var result = new FilePathResult("~/404.html", "text/html");
   return result;
}

Answer 2

routes.MapRoute(
    "404-PageNotFound",
    "{*url}",
    new { controller = "StaticContent", action = "PageNotFound" }
    );  

You can create your own custom error page :

<customErrors mode="On" defaultRedirect="~/Error">
      <error redirect="~/StaticContent/PageNotFound" statusCode="404" />
</customErrors>

public class StaticContent : Controller
{
    public ViewResult Index()
    {
        return View("Error");
    }
    public ViewResult PageNotFound()
    {
        Response.StatusCode = 404;  //you may want to set this to 200
        return View("PageNotFound");
    }
}

Answer 3

You can manage it from Global.asax file. You can get perfect solution from this answer from here