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HTTP 404 : Resource Not found - Custom error

HTTP 404 : Resource Not found - Custom error

L A

8y4.3k.NET

Hello,

I'm newbie to MVC, trying to create a custom error page and show when user is looking for resource which isn't available. Followed few articles and able to show an custom error page.

https://stackoverflow.com/questions/717628/asp-net-mvc-404-error-handling?answertab=votes#tab-top

I have created an Error Controller with 'NotFound404()' action method and view is created with the same name 'NotFound404.cshtml'.

public class ErrorController : Controller
{
// GET: Error
public ActionResult NotFound404()
{
return View();
}
}

Web.config

<system.web>
<customErrors mode="On">
<error statusCode="404" redirect="~/Error/NotFound404"/>
customErrors>
system.web>

When i try to access any unknown resource, i can see the notfound404.cshtml. But when i inspect url it shows as 'http://localhost:xyzw/Error/NotFound404?aspxerrorpath=/New'.

Why do i get such wierd url? and i'm not using any aspx pages but it shows aspx in url. HTTP status under F12-Developer tools- Network - shows 200 OK. which isn't correct. How to rectify this.

And when i tried to access any static html page instead of a new controller/ action-view

<system.web>
<customErrors mode="On">
<error statusCode="404" redirect="~/Shared/NotFound.html"/>
customErrors>
system.web>

404 Error occurs

is this error because of looking up for wrong path.?

My application folder structure

How to fix these errors and please show a right way to configure these error handling strategies.

Thanks in advance.

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Bhavesh Jadav8y ago
Hello Learn Avid,

To slove your problem you should try to understand content from below link

https://stackify.com/aspnet-mvc-error-handling/

after read it, i think you got solution.

Thanks.
+1
Manav Pandya8y ago
Hello

Have you tried by setting proper file path like below :
defaultRedirect="~/shared/notfound.html'
I think problem with path only , you should provide its relative path , just try to change path and do R & D on it

Thanks
+1
L A8y ago
Thanks Manav Pandya, Hiten Pandya for your response. I tried
defaultRedirect="NotFound.html"
But the same HTTP 404 Error screen is shown.

And Manav, i have gone thru the aricles given but couldn't figure out my mistake what's going wrong with my application.

When i use `Controller/Actionmethod` in redirect="Error/NotFound404" in web.config it shows custom error page when i navigate to 'http://localhost:xyzw/New' but when i try navigating to 'http://localhost:xyzw/shared/notfound.html' this again shown HTTP 404 Error screen.

Can't figure out what's going wrong.
+1
Manav Pandya8y ago
Hello

I observed your code , and you might left to use defaultRedirect property , just you need below snippet :
"On" defaultRedirect="NotFound.html">
     "404" redirect="404NotFound.html"/>
     "500" redirect="500NotFound.html"/>

Still you can see .aspx in url [which actually new for me]
For more reference you can follow in-depth article :

- By Microsoft :

https://docs.microsoft.com/en-us/aspnet/web-forms/overview/older-versions-getting-started/deploying-web-site-projects/displaying-a-custom-error-page-cs

https://msdn.microsoft.com/en-us/library/h0hfz6fc(v=vs.85).aspx

- Other Aricles :

https://www.c-sharpcorner.com/UploadFile/618722/custom-error-page-in-Asp-Net-mvc/

https://www.c-sharpcorner.com/UploadFile/092589/custom-error-page-in-Asp-Net/

https://love2dev.com/blog/properly-using-custom-error-pages-in-aspnet/

I hope you will find it useful

Thanks
+2
Hiten Pandya8y ago
Hi,

Please refer the below link. It has something that will be helpful for you.

http://benfoster.io/blog/aspnet-mvc-custom-error-pages

Hope you get your answer.

Thanks.
+3