处理从web服务器接收的json的优雅方式

在c#中处理从web服务器接收的json更好的方法是什么?

是否可以直接传递System.Json.JsonValue对象到响应处理程序?

new FooWebService().FetchSomethingAsync(12, "bar", json =>
    {
        DoSomething1(ConvertJsonToClass1(json["key1"]));
        DoSomething2(ConvertJsonToClass2(json["key2"]));
    });

或者我需要用json实现一些"响应"接口包装JsonValue ?

interface IResponse
{ ... }
class JsonResponse : IResponse
{ ... }
new FooWebService().FetchSomethingAsync(12, "bar", response =>
    {
        DoSomething1(ConvertResponseToClass1(response["key1"]));
        DoSomething2(ConvertResponseToClass2(response["key2"]));
    });

或者将json转换为众所周知的对象，然后将其传递给处理程序?

interface IResponseConverter
{ ... }
class JsonConverter : IResponseConverter
{ ... }
var service = new FooWebService() 
{
    ResponseConverter = new JsonConverter()
};
service.FetchSomethingAsync(12, "bar", response =>
    {
        DoSomething1(response.Key1);
        DoSomething2(response.Key2);
    });