RestSharp - How to handle non-200 responses? RestClient throws exception on Execute

Question

I'm using RestSharp in Windows Phone 8.1 application. RestClient throws exception when server returns response with code different than 200. Wiki says that I should get response with correct status code. I want to get content of response because server returns error messages.

private async Task<T> ExecuteAsync<T>(IRestRequest request)
    {
        if (!_networkAvailableService.IsNetworkAvailable)
        {
            throw new NoInternetException();
        }

        request.AddHeader("Accept", "application/json");

        IRestResponse<T> response;
        try
        {
            response = await _client.Execute<T>(request); //here I get exception
        }
        catch (Exception ex)
        {
            throw new ApiException();
        }

        HandleApiException(response);

        return response.Data;
    }

    private void HandleApiException(IRestResponse response)
    {
        if (response.StatusCode == HttpStatusCode.OK)
        {
            return;
        }
//never reach here :( 
        ApiException apiException;
        try
        {
            var apiError = _deserializer.Deserialize<ApiErrorResponse>(response);
            apiException = new ApiException(apiError);
        }
        catch (Exception)
        {
            throw new ApiException();
        }

        throw apiException;
    }

sample of server response:

HTTP/1.1 400 Bad Request
Cache-Control: no-cache
Pragma: no-cache
Content-Length: 86
Content-Type: application/json;charset=UTF-8
Expires: -1
Server: Microsoft-IIS/8.0
Access-Control-Allow-Origin: *
X-Powered-By: ASP.NET
Date: Mon, 28 Sep 2015 12:30:10 GMT
Connection: close

{"error":"invalid_token","error_description":"The user name or password is incorrect"}

Answer 1

If you are working under Windows Phone 8.1, you're using RestSharp Portable (https://github.com/FubarDevelopment/restsharp.portable) (probably). Use this:

var client = new RestClient();
client.IgnoreResponseStatusCode = true;

With this, you don't get exception with 404 for example. I hope it will be helpful :)