Can I pass an interface based object to an MVC 4 WebApi POST?

Question

I want to have an API as such:

public class RelayController : ApiController
{
    // POST api/values
    public void Post([FromBody]IDataRelayPackage package         


        

Answer 1

The serializer needs a type that it can construct, one with an empty (Default) constructor. Since an Interface can't be constructed, serialization fails and you get a null value.

Two options:

1. Use a POCO (Plain Old Clr Object) with a default constructor
2. Implement your own binder using IActionValueBinder