Send complex objects to .Net Web Api through URL using FromUri attribute

TestController.cs

namespace FromUri.Controllers
{
    using System;
    using System.Web.Http;


    /// <summary>
    ///  Url sample call:
    ///  http://localhost:50872/api/test?key.org=abc&key.dest=123&key.when=2010-01-01T00:00:00&foo=1&bar=bbbrr&foobar.foo=2&foobar.bar=xyz
    /// </summary>
    public class TestController : ApiController
    {
        public string Get([FromUri] Key key, int foo, string bar, [FromUri] FooBar fooBar)
        {
            return "key org:" + key.Org + " Key when" + key.When + " foo: " + foo + " bar: " + bar + " fooBar.Foo " +
                   fooBar.Foo + " fooBar.Bar " + fooBar.Bar;
        }
    }
    public class Key
    {
        public string Org { get; set; }
        public string Dest { get; set; }
        public DateTime When { get; set; }
    }
    public class FooBar
    {
        public int Foo { get; set; }
        public string Bar { get; set; }
    }
}