JSON.NET忽略从System.Exception派生的类型的属性.为什么? [英] JSON.NET is ignoring properties in types derived from System.Exception. Why?

问题描述

我想对继承自System.Exception的自定义异常对象进行JSON序列化.JsonConvert.SerializeObject似乎忽略了派生类型的属性.这个问题可以很简单地说明:

I want to JSON serialize a custom exception object which inherits System.Exception. JsonConvert.SerializeObject seems to ignore properties from the derived type. The problem can be illustrated very simply:

class MyException : Exception {
    public string MyProperty { get; set; }
}

class Program {
    static void Main(string[] args) {
        Console.WriteLine(JsonConvert.SerializeObject(new MyException {MyProperty = "foobar"}, Formatting.Indented));
        //MyProperty is absent from the output. Why?
        Console.ReadLine();
    }
}

我尝试在正确的位置添加DataContract和DataMember属性.他们没有帮助.我如何使它工作?

I've tried adding the DataContract and DataMember attributes in the correct places. They don't help. How do I get this to work?

推荐答案

由于Exception实现了 ISerializable ，因此Json.Net会默认使用它来序列化对象.您可以像这样告诉它忽略 ISerializable :

Because Exception implements ISerializable, Json.Net uses that to serialize the object by default. You can tell it to ignore ISerializable like so:

var settings = new JsonSerializerSettings() {
    Formatting = Formatting.Indented,
    ContractResolver = new DefaultContractResolver() { 
        IgnoreSerializableInterface = true 
    } 
};
Console.WriteLine(JsonConvert.SerializeObject(new MyException {MyProperty = "foobar"}, settings));

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