我有一个Parent类和一个Child类,json字符串包含Child类的属性,但是当我执行DeserializeObject时,我无法获取这些属性,因为Child成为了Parent。
例如:
class Data {
public List<Parent> Parents;
}
class Parent {
public string Foo;
}
class Child : Parent {
public string Bar;
}
var data = new Data { Parents = new List<Parent> { new Child{Bar = "a"} } };
Console.WriteLine(data.Parents.Count); // <= it prints 1
Console.WriteLine(data.Parents.OfType<Child>().Count()); // <= it prints 1
var dataJson = JsonConvert.SerializeObject(data);
data = JsonConvert.DeserializeObject<Data>(dataJson);
Console.WriteLine(data.Parents.Count); // <= it prints 1
Console.WriteLine(data.Parents.OfType<Child>().Count()); // <= it prints 0 instead of 1
我该怎么办? Newtonsoft.Json可以设法做我想做的事情吗?
答案 0 :(得分:4)
使用JsonSerializerSettings' TypeNameHandling
var settings = new JsonSerializerSettings() { TypeNameHandling = TypeNameHandling.All };
var dataJson = JsonConvert.SerializeObject(data, settings);
data = JsonConvert.DeserializeObject<Data>(dataJson, settings);