title: WebAPI [FromBody] always null
body: <p>I received a request like this.</p>
  
  <pre><code>POST /API/Event?EventID=15&amp;UserID=1&amp;Severity=5&amp;DeptID=1&amp;FlowTag=CE HTTP/1.1
  Content-Type: application/x-www-form-urlencoded
  Host: localhost:8088
  Content-Length: 9
  Expect: 100-continue
  Connection: Keep-Alive
  
  
  HTTP/1.1 100 Continue
  
  
  Desc=test
  </code></pre>
  
  <p>And my WebAPI interface is like this:</p>
  
  <pre><code>[Route("API/Event"), HttpPost]
  public IHttpActionResult StationCreateWorkItem(long EventID, long UserID, int Severity,
      long DeptID, string FlowTag, [FromBody] string Desc)
  </code></pre>
  
  <p>However, my Desc parameter is always NULL. May I know how can I retrieve the body content if there is no way for me to use [FromBody] in WebAPI (OWIN)</p>
  
  <p>Sorry, I can't change the incoming message, because it was developed by another company.</p>