Using ApiControllerAttribute without using RouteAttribute

Question

In ASP.NET Core (v 2.1.5) you can create controllers without having them inherit from Controller class (as you know). And if you do, you have to use RouteAttribute to define your routes. But, I'm interested if we can use implicit routing (and not attribute routing) along with ApiController attribute together. Example: Having this implicit routing in Startup.cs:

app.UseMvc(routeBuilder => 
{
    routeBuilder.MapRoute("api_default", "{controller}/{action}/{id?}");
});

And this Controller class

[ApiController]
public class ValuesController 
{
    [HttpGet] 
    public string Get(int id) => id.ToString();
}

Will throw this exception:

InvalidOperationException: Action 'TestApi.Controllers.ValuesController.Get' does not have an attribute route. Action methods on controllers annotated with ApiControllerAttribute must be attribute routed.

Is there a way to avoid the exception?

@Nkosi I did use [HttpGet]. Please see the update. The error is still there. — amiry jd
– amiry jd, Commented Oct 28, 2018 at 23:56
Any reason not wanting to inherit from Api/Controller? I mean, you still have to use a lot of ASP.NET Core classes anyway — Camilo Terevinto
– Camilo Terevinto, Commented Oct 28, 2018 at 23:58
according to docs learn.microsoft.com/en-us/aspnet/core/web-api/… Attribute routing becomes a requirement when using [ApiController] — Nkosi
– Nkosi, Commented Oct 29, 2018 at 0:02

Nkosi · Accepted Answer · 2018-10-29 00:05:16Z

45

But, I'm interested if we can use implicit routing (and not attribute routing) along with ApiController attribute together.

According to official documentation

Attribute routing becomes a requirement. For example:
[Route("api/[controller]")]
[ApiController]
public class ValuesController 
Actions are inaccessible via conventional routes defined in UseMvc or by UseMvcWithDefaultRoute in Startup.Configure.

Note: emphasis mine

Reference Build web APIs with ASP.NET Core: Attribute routing requirement

answered Oct 29, 2018 at 0:05

Nkosi

249k38 gold badges472 silver badges506 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Jez Over a year ago

But why? There seems to be absolutely no justification for this requirement.

abatishchev · Accepted Answer · 2023-04-10 17:28:11Z

0

Also use the [Route("api/VillaAPI")] in Controller Name hard.

edited Apr 10, 2023 at 17:28

abatishchev

101k88 gold badges303 silver badges443 bronze badges

answered Oct 29, 2022 at 6:38

Tushar Ladva

12 bronze badges

Collectives™ on Stack Overflow

Using ApiControllerAttribute without using RouteAttribute

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related