NewtonSoft在运行时为嵌套属性添加JSONIGNORE

根据 newtonSoft 文档,可以通过覆盖来动态忽略选定的属性 CreateProperties .

是否可以动态忽略嵌套属性?

举个例子

public class DynamicContractResolver : DefaultContractResolver
{
    private readonly char _startingWithChar;

    public DynamicContractResolver(char startingWithChar)
    {
        _startingWithChar = startingWithChar;
    }

    protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
    {
        IList<JsonProperty> properties = base.CreateProperties(type, memberSerialization);

        // only serializer properties that start with the specified character
        properties =
            properties.Where(p => p.PropertyName.StartsWith(_startingWithChar.ToString())).ToList();

        return properties;
    }
}

public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }

    public string FullName
    {
        get { return FirstName + " " + LastName; }
    }
}

然后

Person person = new Person
{
    FirstName = "Dennis",
    LastName = "Deepwater-Diver"
};

string startingWithF = JsonConvert.SerializeObject(person, Formatting.Indented,
    new JsonSerializerSettings { ContractResolver = new DynamicContractResolver('F') });

Console.WriteLine(startingWithF);
// {
//   "FirstName": "Dennis",
//   "FullName": "Dennis Deepwater-Diver"
// }

但是如果 Person 看起来像这样,我们想忽略它 DriverID ?

  public class DriverInformation
  {
    public string DriverID {get;set;}
    public string Branch {get;set}
  }

  public class Person
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public DriverInformation Info {get;set}
    
        public string FullName
        {
            get { return FirstName + " " + LastName; }
        }
    }