How can I redirect router to 404 page?

Question

User1052024640 posted

I use the asp.net core MVC and redirect the page to an HTML suffix like this:

[Route("al.html")]
public IActionResult allen()
{
return View();
}

When I input the URL http://localhost:5009/al.html and it works.

Now if I access the URL which is inexistent such as http://localhost:5009/all.html

The browser only shows the following text:

{"code":"40310014","msg":"invalid Referer header"}

Well, now I want it not to show the text above but redirect to the 404page.

How can I achieve this? Thank you.

Answer 1

User-1038772411 posted

Hi, mywatermelon

please add map route in your routeconfig file :

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

Reference link :

https://stackoverflow.com/questions/553922/routing-for-custom-asp-net-mvc-404-error-page

Thanks.

Answer 2

User711641945 posted

Hi mywatermelon,

I use Route attribute and it could show 404Page as expected if i use the wrong url. Did you configure any other thing?The error code you shown seems to be one of  the CDN default error code.Please share a simple demo that could reproduce your issue and it would be more helpful.

Best Regards,

Rena

Answer 3

User1052024640 posted

Yes, I used a third-party CDN yet. I used a 404-page exception in .net core and it only works in someplace but not the HTML suffix.

I always thought it is the problem of .net core and now after I asked more about the CDN supplier, it is not the problem of .net core but the CDN.

Thanks for reminding me. Thank you.