title: Why detailed error message is not passed to HttpClient?
body: <p>I am using the default Web Api controller that is auto generated. I am testing the validation and error handling in the client side. But somehow I have realised that the detail error message is not passed to client. Either if I throw HttpResponseException or returning IHttpActionResult in both cases the client is seeing only "Bad Request" but not the detailed message. Can anyone explain what is going wrong please?</p>
  
  <pre><code>     public IHttpActionResult Delete(int id)
      {
          if (id &lt;= 0)
          {
              var response = new HttpResponseMessage(HttpStatusCode.NotFound)
              {
                  Content = new StringContent("Id should be greater than zero.", System.Text.Encoding.UTF8, "text/plain"),
                  StatusCode = HttpStatusCode.NotFound
  
              };
              throw new HttpResponseException(response) // Either this way
          }
  
          var itemToDelete = (from i in Values
                              where i.Id == id
                              select i).SingleOrDefault();
  
          if (itemToDelete == null)
          {
              return BadRequest(string.Format("Unable to find a value for the Id {0}", id)); // Or This way
          }
  
          Values.Remove(itemToDelete);
          return Ok();
      }
  </code></pre>
  
  <p><strong>client code is as:</strong></p>
  
  <pre><code> private async static Task DeleteValue(int id)
      {
  
          var url = "http://localhost:13628/api/Values/" + id;
          using (var client = new HttpClient())
          {
              var response = await client.DeleteAsync(url);
              if (response.IsSuccessStatusCode)
              {
                  await ReadValues();
              }
              else
              {
                  Console.WriteLine(response.ReasonPhrase);
                  Console.WriteLine(response.StatusCode);
              }
          }
      }
  </code></pre>
  
  <p>None of the above works??</p>
  
  <p>Thx</p>