How to convert a web api version 1 HttpResponseMessage based code base to a web api version 2 IHttpActionResult based code base. (http://weblogs.asp.net/dwahlin/archive/2013/11/11/new-features-in-asp-net-web-api-2-part-i.aspx)

NewHotness.cs

public IHttpActionResult Post([FromBody]Customer cust)
{
    var newCust = _Repository.InsertCustomer(cust);
    if (newCust != null)
    {
        return Created<Customer>(Request.RequestUri + newCust.ID.ToString(), newCust);
    }
    else
    {
        return Conflict();
    }
}

OldAndBusted.cs

public HttpResponseMessage Post([FromBody]Customer cust)
{
    var newCust = _Repository.InsertCustomer(cust);
    if (newCust != null)
    {
        var msg = new HttpResponseMessage(HttpStatusCode.Created);
        msg.Headers.Location = new Uri(Request.RequestUri + newCust.ID.ToString());
        return msg;
    }
    else
    {
        throw new HttpResponseException(HttpStatusCode.Conflict);
    }
}