Custom URL Routing to Handle Optional Parameter with C# Controller

Question

I'm having issues navigating to my ListPeople method using the URL. If I type localhost:12345/People?peopleId=405&age=24 into my URL it works fine; however, when I pass localhost:12345/People?peopleId=405 into my URL, it returns a 404 error.

404 Error Message:

"No HTTP resource was found that matches the request URI'http://localhost:12345/People?peopleId=405'."

How can I change the routing of my ListPeople controller so that it excepts BOTH url's?

Controller

[HttpGet]
[ReturnDescription("List of People")]
[CustomActionName("")]
[Description("List of people  for given peopleId and age")]
public ApiResponse<Status, IEnumerable<People>> ListPeople(int peopleId, int? age)
{
    return _personProject.ListPeople(peopleId, age);
}

Successful URL

localhost:12345/People?peopleId=405&age=24

Failing URL

localhost:12345/People?peopleId=405

Will Custode · Accepted Answer · 2015-07-20 15:04:39Z

1

As it is written, you have a method that represents the url:

/People?peopleId={0}&age={0}

You have to make an overload that will only accept peopleId because a method can only be the target of one route when you're setting it up automatically like this. What I would advise would be to make a simple overload:

public ApiResponse<Status, IEnumerable<People>> ListPeople(int peopleID)
{
    return ListPeople(peopleId, null);
}

answered Jul 20, 2015 at 15:04

Will Custode

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Comments

CoderWho · Accepted Answer · 2015-07-20 15:05:06Z

1

Sorry i can't write comment.So I must write here.If you'r using api Check your WebApiConfig. You must define your parameters in this config.

Like;

config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{action}/{peopleid}/{age}",
            defaults: new { peopleid = RouteParameter.Optional, age = RouteParameter.Optional }
        );

Just an example. I think i can help you.

answered Jul 20, 2015 at 15:05

CoderWho

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1 Comment

ChaseHardin Over a year ago

Thanks for your help @CoderWho. I ended up using the answer above, but gave you an up arrow! :)

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