What is wrong with this ASP.Net and Fiddler example?

Question

I am using Visual Studio 2012 RC. I am using the default routes and have the following Web API controller: ``` public class FooController : ApiController { // GET api/foo public IEnumerable<string> Get() { return new string[] { "value1", "value2" }; } // GET api/foo/5 public string Get(int id) { return "value"; } // POST api/foo public string Post(string abc) { Console.WriteLine("value: {0}", abc); return "foo" + abc; } // PUT api/foo/5 public void Put(int id, string value) { } // DELETE api/foo/5 public void Delete(int id) { } } ``` I wanted to do a simple test of POST in Fiddler, so I have Request Headers User-Agent: Fiddler Content-Type: application/json Request Body {"abc": "def"} When I debug the request, the parameter abc comes in as null, not "def". Is there something wrong with my Fiddler syntax?

Accepted Answer

(1) By default, simple types are taken from the URI. To read a simple type from the request body, add the [FromBody] attribute to the parameter.

```
public string Post([FromBody] string abc)
```

(2) '{"abc": "def"}' defines an object with a property named "abc" - to send a JSON string, the request body should just be "def"

What is wrong with this ASP.Net and Fiddler example?

Solution

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