.NET Web API 2和IIS PUT/DELETE不工作

在删除对我的Web API 2控制器的请求时，我得到：

Request URL:http://localhost/phoenix/api/apps/1245 
Request Method:DELETE
Status Code:404 Not Found

DELETE http://localhost/myapp/api/apps/1245 404 (Not Found) 

我的控制器看起来像：

    [EnableCors(origins: "http://localhost", headers: "*", methods: "*", SupportsCredentials = true)]
[Route("api/apps")]
public class ApplicationController : ApiController
{
    // DELETE api/apps/5
    public void Delete(string id)
    {
        //apps.Delete(id);
    }
}

“我的IIS”是为放置/删除谓词设置的：

my web.config中有*个动词：

<system.webServer>
  <handlers>
  <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
  <remove name="OPTIONSVerbHandler" />
  <remove name="TRACEVerbHandler" />
  <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
  </handlers>
</system.webServer>

---

我缺少什么？

路由模板中不存在

id

参数。将控制器级路由更改为

[路由（“api/apps/{id？}”）]

或者从querystring提供id值