//json 序列化
JObject obj1 = JObject.FromObject(new
{
    id = 1,
    name = "张三",
    age = 20
});
Console.WriteLine(obj1.ToString());
//输出：
//{
//  "id": 1,
//  "name": "张三",
//  "age": 20
//}
 
 
//指定忽略对象的属性
//注：指定的key区分大小写
obj1.Remove("id");
Console.WriteLine(obj1.ToString());
//输出结果：
//{
//    "name": "张三",
//    "age": 20
//}

JArray jarr = obj1.SelectToken("images") as JArray;
if (jarr != null)
    foreach (JObject item in jarr)
    {
        item.Remove("id");
    }