public static ApiException CreateApiException(HttpResponseMessage response)
{
var httpErrorObject = response.Content.ReadAsStringAsync().Result;
// Create an anonymous object to use as the template for deserialization:
var anonymousErrorObject =
new { message = "", ModelState = new Dictionary<string, string[]>() };
// Deserialize:
var deserializedErrorObject =
JsonConvert.DeserializeAnonymousType(httpErrorObject, anonymousErrorObject);
// Now wrap into an exception which best fullfills the needs of your application:
var ex = new ApiException(response);
// Sometimes, there may be Model Errors:
if (deserializedErrorObject.ModelState != null)
{
var errors =
deserializedErrorObject.ModelState
.Select(kvp => string.Join(". ", kvp.Value)).ToList();
for (int i = 0; i < errors.Count(); i++)
{
// Wrap the errors up into the base Exception.Data Dictionary:
ex.Data.Add(i, errors.ElementAt(i));
}
}
// Othertimes, there may not be Model Errors:
else
{
var error =
JsonConvert.DeserializeObject<Dictionary<string, string>>(httpErrorObject);
foreach (var kvp in error)
{
// Wrap the errors up into the base Exception.Data Dictionary:
ex.Data.Add(kvp.Key, kvp.Value);
}
}
return ex;
}
public static ApiException CreateApiException(WebException ex)
{
var message = new HttpResponseMessage(((HttpWebResponse)ex.Response).StatusCode);
var exception = new ApiException(message);
if (ex.Response != null)
{
var rs = ex.Response.GetResponseStream();
if (rs != null)
{
using (var d = new StreamReader(rs))
{
var response = d.ReadToEnd();
var settings = new JsonSerializerSettings();
settings.ContractResolver = new SnakeCaseContractResolver();
settings.NullValueHandling = NullValueHandling.Ignore;
var error = JsonConvert.DeserializeObject<TokenError>(response, settings);
exception.Data.Add(0, error.ErrorDescription.ToString());
}
}
}
return exception;
}