How to redirect to a action method when a file not found

I can find it in thisblog post:

https://weblogs.asp.net/jongalloway/asp-net-mvc-routing-intercepting-file-requests-like-index-html-and-what-it-teaches-about-how-routing-works

thanks for replay

Add following code in Web.config for 404 file not found.

 

 
   
     
   

 

In Controller action:

 

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