ASP.NET Web API 2 with Angular woes

Question

This is a development of a question that I asked earlier that changed into a different problem.

My Web API 2 controller is successfully being hit, but the view model passed as a parameter is not being populated. It contains nulls for strings and falses for booleans.

My controller looks like this:

[HttpPost]
public IEnumerable<string> Post(SearchParameters id)
{
    return null;
}

public struct SearchParameters
{
    string brokerIsUnallocated;
    string brokerIncludeDeleted;
    string businessType;
    bool codeC;
    bool codeD;
    bool codeP;
    bool codeS;
    bool codeT;
    bool codeX;
    string companyName;
    string contactName;
    string country;
    string customerId;
    string department;
    string selectedBroker;
    string town;
}

I have checked in Fiddler and every parameter is being passed. Do I somehow need to pass this as a parameter called ID to match the controller action? I am using the default routing, like this:

public static void Register(HttpConfiguration config)
{
    config.MapHttpAttributeRoutes();

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

Fiddler request looks like this:

Looking forward to your responses.

Answer 1

Change your definition to:

public IEnumerable<string> Post([FromBody]SearchParameters id)
{
    return null;
}

The notation FromBody should serialize your data.