I believe after receiving the response you are probably trying to cast WidgetBaseDTO
to either WidgetTypeA
or WidgetTypeB
and you are seeing null? if yes, then you can try after making the following setting to the Json formatter on the server...make sure to make this setting on the client side's json formatter too.
config.Formatters.JsonFormatter.SerializerSettings.TypeNameHandling = Newtonsoft.Json.TypeNameHandling.Objects;
The above setting will cause the type information of WidgetTypeA
or WidgetTypeB
to be put over the wire which gives a hint to the client as to the actual type of the object being deserialized...you can try looking at the wire format of the response to get an idea...
Client side:
JsonMediaTypeFormatter jsonFormatter = new JsonMediaTypeFormatter();
jsonFormatter.SerializerSettings.TypeNameHandling = Newtonsoft.Json.TypeNameHandling.Objects;
WidgetBaseDTO baseDTO = resp.Content.ReadAsAsync<WidgetBaseDTO>(new MediaTypeFormatter[] { jsonFormatter }).Result;