Implement custom 404 error pages in MVC, and customize 404 in mvc

Implement custom 404 error pages in MVC, and customize 404 in mvc

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There is a NotFound Action Method in HomeController.

public ActionResult NotFound(){    return View();}

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View

@ {Layout = null ;}<! DOCTYPE html> View Code
The Application_Error method defined in Global. asax. cs gets an error in the method and determines whether it is a 404 error of a static resource. If not, the custom error page is displayed.
private readonly string[] staticFileExt = new string[] { ".axd", ".ashx", ".bmp", ".css", ".gif", ".htm", ".html", ".ico", ".jpeg", ".jpg", ".js", ".png", ".rar", ".zip",".woff",".ttf" ,".eot",".svg"};
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protected void Application_Error(){    var error = Server.GetLastError() as HttpException;    if (error!= null && error.GetHttpCode() == 404)    {        if (!IsStaticResource(Request))        {            Response.Clear();            Server.ClearError();            Response.TrySkipIisCustomErrors = true;            IController controller = new HomeController();            var routeData = new RouteData();            routeData.Values.Add("controller", "Home");            routeData.Values.Add("action", "NotFound");            controller.Execute(new RequestContext(new HttpContextWrapper(Context), routeData));        }    }}private bool IsStaticResource(HttpRequest request){    string extension = VirtualPathUtility.GetExtension(request.Path);    return staticFileExt.Contains(extension);}
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When the current server accesses an existing page or resource:

 
 
 
When accessing non-static resources that do not exist, the custom error page is displayed.

 
 
When you access a static resource that does not exist: