c# - Json.NET Serialize private members and not readonly properties

Question

How can I customize Json.NET to serialize private members and NOT serialize public readonly properties (without using attributes).

I've had a stab around at creating a custom IContractResolver but am a bit lost.

Answer 1

对于部分答案，弄乱 DefaultContractResolver.DefaultMembersSearchFlags 可以让它包含私人的东西：

Newtonsoft.Json.JsonSerializerSettings jss = new Newtonsoft.Json.JsonSerializerSettings();

if (includePrivateMembers)
{
    Newtonsoft.Json.Serialization.DefaultContractResolver dcr = new Newtonsoft.Json.Serialization.DefaultContractResolver();
    dcr.DefaultMembersSearchFlags |= System.Reflection.BindingFlags.NonPublic;
    jss.ContractResolver = dcr;
}

return Newtonsoft.Json.JsonConvert.SerializeObject(o, jss);

似乎适用于很多对象，尽管其中一些似乎会产生 CLR 异常。

Answer 2

作为对Chris 的回答，DefaultMemberSearchFlags属性 onDefaultContractResolver 自版本 6 起已弃用。尽管弃用消息说了什么，但我相信您也需要覆盖该CreateProperties方法，就像LB 解释的那样。

此方法使您可以完全控制，包括排除只读属性：

class PrivateContractResolver : DefaultContractResolver
{
    protected override List<MemberInfo> GetSerializableMembers(Type objectType)
    {
        var flags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;
        MemberInfo[] fields = objectType.GetFields(flags);
        return fields
            .Concat(objectType.GetProperties(flags).Where(propInfo => propInfo.CanWrite))
            .ToList();
    }

    protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
    {
           return base.CreateProperties(type, MemberSerialization.Fields);
    }           
}