Change controller route name in ASP.NET Core MVC 404 error

Question

I want to change the route display name in URL, like below:

Access UserController display: https://localhost:7214/admin/login

Access CustomerController display: https://localhost:7214/customers/index

UserController.cs

[Route("admin")]
public class UserController : Controller
{
    [AllowAnonymous]
    public IActionResult Login(string returnUrl)
    {
        ViewBag.ReturnUrl = returnUrl;

        return View();
    }
}

CustomerController.cs

[Route("customers")]
public class CustomerController : Controller
{
    public IActionResult Index()
    {
        return View();
    }
}

Program.cs

app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Admin}/{action=Login}/{id?}");

app.Run();

But when I run the program, hit the following error:

I don't want to use Areas, any other options other than Areas?

Updated:

I modified code below in Program.cs

app.MapControllerRoute(
    name: "customers",
    pattern: "customers/{action}/{id?}",
    defaults: new { controller = "Customer", action = "Index" });

Access index page is find, but access route method, hit error 404.

public class CustomerController : Controller
{
    public IActionResult Index()  <-- working fine
    {
        return View();
    }

    [Route("test/export")]
    public IActionResult Test()  <-- error 404
    {
        return View();
    }
}

Tanzim Siddiqee · Accepted Answer · 2022-08-23 06:33:29Z

3

Routing from Contoller using Route attribute,

UserController:

[Route("admin/[action]/{id?}")]
public class UserController : Controller
{
    [AllowAnonymous]
    public IActionResult Login(string returnUrl)
    {
        ViewBag.ReturnUrl = returnUrl;

        return View();
    }
}

CustomerController:

[Route("customers/[action]/{id?}")]
public class CustomerController : Controller
{
    public IActionResult Index()
    {
        return View();
    }
}

Or you can add route in Startup.cs (Program.cs file for 6.0 and up).

Multiple conventional routes:

app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Home}/{action=Index}/{id?}");

app.MapControllerRoute(
                name: "demo",
                pattern: "admin/{action}/{id?}",
                defaults: new { controller = "User", action = "Login" });

app.MapControllerRoute(
                name: "demo2",
                pattern: "customers/{action}/{id?}",
                defaults: new { controller = "Customer", action = "Index" });

Reference: Asp.net core Docs https://learn.microsoft.com/en-us/aspnet/core/mvc/controllers/routing?view=aspnetcore-6.0

edited Aug 23, 2022 at 6:33

answered Aug 23, 2022 at 6:28

Tanzim Siddiqee

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10 Comments

Howard Hee Over a year ago

Hi, please refer my updated code, i have error 404 again if follow second method.

Tanzim Siddiqee Over a year ago

[Route("test")] --> remove this

Howard Hee Over a year ago

Thanks, but I found another issue on second approach, for the customer, I tried both URL /customers/index or /customer/index , realized that without s also able to access the page

Howard Hee Over a year ago

For first approach, if I add [Route("homes/{action}/{id?}")] on start up page controller will hit 404 too,

Tanzim Siddiqee Over a year ago

" for the customer, I tried both URL /customers/index or /customer/index , realized that without s also able to access the page...." /customer/index works because of app.MapControllerRoute( name: "default", pattern: "{controller=Home}/{action=Index}/{id?}");

|

Yong Shun · Accepted Answer · 2022-08-23 06:05:08Z

0

Since you have applied the attribute routing, the actions method should also be applied with attribute routing too.

Solution 1

UserController.cs

[Route("admin")]
public class UserController : Controller
{
    [AllowAnonymous]
    [HttpGet("login")]
    public IActionResult Login(string returnUrl)
    {
        ViewBag.ReturnUrl = returnUrl;

        return View();
    }
}

CustomerController.cs

[Route("customers")]
public class CustomerController : Controller
{
    [HttpGet("index")]
    public IActionResult Index()
    {
        return View();
    }
}

Demo

Solution 2

Refer to the demo for defining the route for Controller (level) with Attribute Routing,

[Route("api/{controller}/{action}/{id?:int}")]
public abstract class BaseApiController : ControllerBase, IApiController
{
    // ...
}

UserController.cs

[Route("admin/{action}/{id?}")]
public class UserController : Controller
{
    [AllowAnonymous]
    public IActionResult Login(string returnUrl)
    {
        ViewBag.ReturnUrl = returnUrl;

        return View();
    }
}

CustomerController.cs

[Route("customers/{action}/{id?}")]
public class CustomerController : Controller
{
    public IActionResult Index()
    {
        return View();
    }
}

Demo

edited Aug 23, 2022 at 6:05

answered Aug 23, 2022 at 5:52

Yong Shun

54.6k6 gold badges38 silver badges66 bronze badges

5 Comments

Howard Hee Over a year ago

But it's not work on start up page, your default page is Home, if set the route on Home will hit error 404.

Howard Hee Over a year ago

Please refer my updated code, even I tried use [Route("customers/{action}/{id?}")] , still have error during access test method

Howard Hee Over a year ago

I see, how about the issue [Route("homes/{action}/{id?}")] ? I try set this on default start up page, hit the 404, should I do any changes on Program.cs?

Yong Shun Over a year ago

Do you mind sharing your repository for reproducing the error you mentioned?

Howard Hee Over a year ago

I uploaded the code, github.com/howardhee/RoutingError.git Just added [Route("homes/{action}/{id?}")] on Home controller then hit the error.

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