If T can be enumerated, it can not be deserialized using ReadAs<T>.

[hamamotsu]

Usage environment

• version : 1.6.3
• platform : aspnetcore2.1 and LINQPad

Reproduction procedure

1. Create Get request.
2. Call SendAsync.
3. Deserialize the response to IEnumerable<T>

ODataHttpClient.Serializers.JsonSerializer.Default = ODataHttpClient.Serializers.JsonSerializer.General;
var client = new ODataClient(new HttpClient(), user, pass);

var uri = "http://example.com/data/ProductContents?$filter=Id eq 1 or Id eq 2";
var request = Request.Get(uri);
var response = await client.SendAsync(request);
var values = response.ReadAs<IEnumerable<ProductContent>>("$.value");

Error Detail

Throw JsonSerializationException

Exception message

Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'ProductContent' because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly.To fix this error either change the JSON to a JSON object (e.g. {"name":"value"}) or change the deserialized type to an array or a type that implements a collection interface (e.g. ICollection, IList) like List<T> that can be deserialized from a JSON array. JsonArrayAttribute can also be added to the type to force it to deserialize from a JSON array.Path 'value', line 1, position 94.

Response Body

{"@odata.context":"http://example.com/data/ProductContents/$metadata#ProductContents","value":[{"Id":1,"ProductManageId":1,"ContentType":1,"Heading":"empty","Content":"hogehoge","SortOrder":0},{"Id":2,"ProductManageId":1,"ContentType":2,"Heading":"empty","Content":"hogehoge","SortOrder":0}]}

It is possible to deserialize using JToken or "JObject.ToObjedct ()" without using the ReadAs method.

JObject Pattern

var values = response.ReadAs<JArray>("$.value");
var objects = values.Select(v => ((JObject)v).ToObject<ProductContent>());

JToken Pattern

private static readonly JsonSerializerSettings _general = new JsonSerializerSettings
{
  Converters ={ new ByteArrayConverter() }
};

var token = JToken.Parse(response.Body).SelectToken("$.value");
var objects = token.ToObject<IEnumerable<ProductContent>>(Newtonsoft.Json.JsonSerializer.Create(_general));

[iwate]

@hamamotsu Thank you for your report!
I fix and release new version package on nuget. please update package of your project.
https://www.nuget.org/packages/ODataHttpClient/1.6.4