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Problems Creating a simple WebAPI Service

I've been following these instructions on creating my first WebAPI service:

https://codecloudy.wordpress.com/2014/03/19/asp-net-web-api-101-basics/

I'll post the code below.

According to the article it should not only allow the browser to display results with such urls as:

http://localhost:56315/api/values
and
http://localhost:56315/api/values/1

but it should also be possible to send POST messages via Fiddler:

However I am always getting a 500 error when I do this and no breakpoints get hit:

I've tried publishing to my local IIS but I get the same problems - the browser displays ok but posting fails with a 500 error.

What am I doing wrong:

Here is the ValuesController.cs:

using System.Collections.Generic;
using System.Web.Http;

namespace FirstWebAPIService.Controllers
{
    public class ValuesController : ApiController
    {
        // GET api/values
        public IEnumerable<string> Get()
        {
            return new string[] { "value1", "value2" };
        }

        // GET api/values/5
        public string Get(int id)
        {
            return "value";
        }

        // POST api/values
        public void Post([FromBody]string value)
        {
        }

        public void Post(object value)
        {
        }

        // PUT api/values/5
        public void Put(int id, [FromBody]string value)
        {
        }

        // DELETE api/values/5
        public void Delete(int id)
        {
        }
    }
}

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kaufmed

If you change line 21 to:

public void Post([FromBody]string id)

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...does it work? If it does, then I'll explain why.

purplesoup

ASKER

Yes it does - very interesting... tell me more!!

purplesoup

ASKER

Interesting - if I change this:

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

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and this:

        // POST api/values
        public void Post([FromBody]string value)
        {
        }

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it works again - although I had to change both {value} and value = RouteParameter.Optional - so I guess that is what I needed.

Also I found that Get(int id) stopped working through the browser - it was just returning the default IEnumerable, unless I changed the parameter to

        public string Get(int value)
        {
            return "value";
        }

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kaufmed

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purplesoup

ASKER

Thanks for your help - a great explanation too.