private HttpResponseMessage BuildApiResponse(HttpRequestMessage request, HttpResponseMessage response)
{
object content;
List <string> modelStateErrors = new List <string>();
//Step 2: Get the Response Content
if (response.TryGetContentValue(out content) && !response.IsSuccessStatusCode)
{
HttpError error = content as HttpError;
if (error != null)
{
//Step 3: If content is an error, return nothing for the Result.
content = null; //We have errors, so don't return any content
//Step 4: Insert the ModelState errors
if (error.ModelState != null)
{
//Read as string
var httpErrorObject = response.Content.ReadAsStringAsync().Result;
//Convert to anonymous object
var anonymousErrorObject = new { message = "", ModelState = new Dictionary <string, string[]>() };
// Deserialize anonymous object
var deserializedErrorObject = JsonConvert.DeserializeAnonymousType(httpErrorObject, anonymousErrorObject);
// Get error messages from ModelState object
var modelStateValues = deserializedErrorObject.ModelState.Select(kvp => string.Join(". ", kvp.Value));
for (int i = 0; i < modelStateValues.Count(); i++)
{
modelStateErrors.Add(modelStateValues.ElementAt(i));
}
}
else
{
modelStateErrors.Add(error.FirstOrDefault().Value.ToString());
}
}
}
//Step 5: Create a new response
var newResponse = request.CreateResponse(response.StatusCode, new ResponsePackage(content, modelStateErrors));
//Step 6: Add Back the Response Headers
foreach (var header in response.Headers) //Add back the response headers
{
newResponse.Headers.Add(header.Key, header.Value);
}
return(newResponse);
}
