404 Http error handler in Asp.Net MVC (RC 5)

Question

How can I Handler 404 errors without the framework throwing an Exception 500 error code?

score 21 · Accepted Answer · edited May 31 '09 at 11:38

21

http://jason.whitehorn.ws/2008/06/17/Friendly-404-Errors-In-ASPNET-MVC.aspx gives the following explanation:

Add a wildcard routing rule as your final rule:

routes.MapRoute("Error", 
                "{*url}", 
                new { controller = "Error", action = "Http404" });

Any request that doesn't match another rule gets routed to the Http404 action of the Error controller, which you also need to configure:

public ActionResult Http404(string url) {
    Response.StatusCode = 404;
    ViewData["url"] = url;
    return View();
}

edited May 31 '09 at 11:38

Pure.Krome

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answered Sep 20 '08 at 17:38

dave

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Just an FYI, The above linked post is returning a 404 (oh the irony). The new address is: http://jason.whitehorn.ws/2008/06/17/Friendly-404-Errors-In-ASPNET-MVC.aspx – Jason Whitehorn Nov 25 '08 at 04:21
4

The only problem here is that so much matches the typical /{controller}/{action}/{id} route. To get around the problem, I explicitly defined all my routes and got rid of it. – BC. Mar 15 '09 at 01:31
4

Unfortunatelly the link doesn't work. Even http://jason.whitehorn.ws/ is not accessible :| – stej Aug 12 '09 at 06:35
This is fine for situations where routes don't match, but doesn't help when an id is not valid for example... – UpTheCreek Feb 04 '11 at 16:11
@JasonWhitehorn 404 again – Bryan Denny May 22 '14 at 15:27

score 9 · Answer 2 · answered Sep 21 '08 at 17:48

9

You can also override HandleUnknownAction within your controller in the cases where a request does match a controller, but doesn't match an action. The default implementation does raise a 404 error.

answered Sep 21 '08 at 17:48

Haacked

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Good idea. Check out this solution which incorporates a `HandleUnknownAction` override: http://stackoverflow.com/questions/619895/how-can-i-properly-handle-404s-in-asp-net-mvc/2577095#2577095 – Matt Kocaj Apr 05 '10 at 05:57

score 4 · Answer 3 · answered May 10 '10 at 14:33

4

throw new HttpException(404, "Resource Not Found");

answered May 10 '10 at 14:33

Adam

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score 0 · Answer 4 · answered Dec 15 '11 at 19:42

With MVC 3 you can return HttpNotFound() to properly return a 404.

Like this:

public ActionResult Download(string fontName)
{
    FontCache.InitalizeFonts();

    fontName = HttpUtility.UrlDecode(fontName);

    var font = FontCache.GetFontByName(fontName);
    if (font == null)
        return HttpNotFound();

    return View(font);
}

404 Http error handler in Asp.Net MVC (RC 5)

4 Answers4

Linked