Web API complex parameter properties are all null

Question

I have a Web API service call that updates a user\'s preferences. Unfortunately when I call this POST method from a jQuery ajax call, the request parameter object\'s proper

Answer 1

Using this technique posted by @blorkfish worked great:

public HttpResponseMessage Post(Object model)
    {
        var jsonString = model.ToString();
        PreferenceRequest result = JsonConvert.DeserializeObject(jsonString);
    }

I had a parameter object, which had a couple of native types and a couple more objects as properties. The objects had constructors marked internal and the JsonConvert.DeserializedObject call on the jsonString gave the error:

Unable to find a constructor to use for type ChildObjectB. A class should either have a default constructor, one constructor with arguments or a constructor marked with the JsonConstructor attribute.

I changed the constructors to public and it is now populating the parameter object when I replace the Object model parameter with the real object. Thanks!