Create Customize NotFound Method

Question

User338455301 posted

Hi 
i want create methods for my customize example : 

return NotFound();

i write this method but i cant call it in other controller just i cant use in own  controller 

 public IActionResult NotFound1()
        {
            return View("NotFound");
        }

how to create public method (exmaple : return Notfound()) ?

Answer 1

User-217098811 posted

Hi elahi1mahdi

Maybe you can try it

return Content(HttpStatusCode.NotFound, "Not Found");

Hope this can help you

Best regards

yinqiu

Answer 2

User338455301 posted

thanks but i want add function one line NotFound() , ...... and customzie it how to do it ?  

Answer 3

User711641945 posted

Hi elahi1mahdi,

It seems you want to call the NotFound1 action in the other controller,you could use `RedirectToAction("ActionName","ControllerName")` like below:

return RedirectToAction("NotFound1","Home");

Another way is make your controller inherits the controller which define the NotFound1 action:

1.NotFound1 action:

public class HomeController : Controller
{
    private readonly IConfiguration configuration;
    public HomeController(IConfiguration config)
    {
        this.configuration = config;
    }
    public IActionResult NotFound1()
    {
        return View("NotFound");
    }
}

2.Another controller:

public class AccountController : HomeController 
{
    public AccountController(IConfiguration config) : base(config)
    {
    }

    // GET: /<controller>/
    public IActionResult Login()
    {
        //return View();
        return NotFound1();
    }
}

If you do not create any constructors,you could remove them by yourself.

Best Regards,

Rena

Answer 4

User338455301 posted

thanks bit i want just call return NotFound1() in any controller without inherits with this way just use such as return NotFound()
how to do it ?  

Answer 5

User475983607 posted

thanks bit i want just call return NotFound1() in any controller without inherits with this way just use such as return NotFound()
how to do it ?  

NotFound() method is used in Web API to return a JSON response.  It does not return a View which, as far as I can tell, is what you are trying to do.

Please read the standard error ASP.NET Core reference documentation and the blog below for information on configuring the exception handling middleware. 

https://www.learnrazorpages.com/configuration/custom-errors  

https://docs.microsoft.com/en-us/aspnet/core/fundamentals/error-handling?view=aspnetcore-3.1

https://docs.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.builder.statuscodepagesextensions.usestatuscodepageswithredirects?view=aspnetcore-3.1

Keep in mind, the HTML response is completely under your control.

Answer 6

User338455301 posted

its good way but have a problem 

i use your way to do this work and now i can call NotFound1() in any controller 
but in startup use this code to handle error by status code 

            app.UseStatusCodePagesWithReExecute("/" + CultureInfo.CurrentCulture.Name + "/errors/{0}");

but because you use inheritance its show this error 

AmbiguousMatchException: The request matched multiple endpoints. Matches:

ModernProject.Controllers.ProductController.HandelError (itsaco_RefrencenetCoreCMS)
ModernProject.Controllers.ErrorController.HandelError (itsaco_RefrencenetCoreCMS)
AspCorePanelProject.Controllers.HomeController.HandelError (itsaco_RefrencenetCoreCMS)


and its my controllers :

 private readonly IConfiguration _configuration;
        public ErrorController(IConfiguration configuration)
        {
            _configuration = configuration;
        }
        [Route("/{culture}/errors/{code}")]
        [Route("/errors/{code}")]
        public async Task<IActionResult> Error(string code)
        {
            if (code == "404")
                return View("~/Views/Error/Page404.cshtml");
            else
                return View("~/Views/Error/Page505.cshtml");
        }

Answer 7

User475983607 posted

but because you use inheritance its show this error 

No.  There are multiple Error Actions in your design that have the same URL.  Fix you code.

Answer 8

User338455301 posted

no when i use this way i have this error 

inheritance  from ErrorController  to cause of this error 

when i remove this inheritance  its worked correctly  but i cant access to NotFound1()

Answer 9

User711641945 posted

Hi elahi1mahdi,

You use UseStatusCodePagesWithReExecute middleware,it seems no need to use the Return NotFound1() to return the 404 error page.Why did you consist on using the custom NotFound method. Just you use the default method `NotFound()` and then it would hit the Error action and display the 404 error page.

Best Regards,

Rena

Answer 10

User475983607 posted

elahi1mahdi

no when i use this way i have this error 

inheritance  from ErrorController  to cause of this error 

when i remove this inheritance  its worked correctly  but i cant access to NotFound1()

Your design creates multiple Error actions.  Fix your code!