反序列化Json字符串时忽略某些属性

Question

How do I ignore certain properties when deserializing a json string.

Say I have a string

{"Id": 123, "name":"Test", "Description":"desc123ds"}

and a class with the same properties. In some cases I don't want to return "Id".

I have tried a custom ContractResolver but the only thing it does is sets the default value and the property remains present in the json string.

public class CoreJsonContractResolver<T> : DefaultContractResolver
    {
        public static CoreJsonContractResolver<T> Instance { get; } = new CoreJsonContractResolver<T>();

        protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)
        {
            var property = base.CreateProperty(member, memberSerialization);
            if(property.DeclaringType == typeof(T))
            {
                if (property.PropertyName == "Id")
                    property.Ignored = true;
            }
            return property;
        }
    }

EDIT: The reason why I didn't use [JsonIgnore] property is because I need to ignore properties only in certain cases.

Answer 1

看看JsonIgnore 属性 ，看看这篇文章