Json serialization and deserialization, as well as chaotic k_BackingField and jsonk_backingfield

Json serialization and deserialization, as well as chaotic k_BackingField and jsonk_backingfield

Json data needs to be used today, so Json serialization and deserialization are used. First, let's talk about how to serialize:

1. serialization and deserialization

First, add the reference of System. Runtime. Serialization.

 

Convert an Object to a Json file:

      public static string ObjectToJson(object obj)        {            DataContractJsonSerializer ser = new DataContractJsonSerializer(obj.GetType());            using (MemoryStream ms = new MemoryStream())            {                ser.WriteObject(ms, obj);                return Encoding.Default.GetString(ms.ToArray());            }        }

Convert Json data to Object

    public static T JsonToObject<T>(string json) where T : class        {            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));            using (MemoryStream ms = new MemoryStream(Encoding.Default.GetBytes(json)))            {                return (T)ser.ReadObject(ms);            }        }

The program is relatively simple and I will not talk about it much. At the beginning, the object class was like this:

  [Serializable]    class User    {        public int Age { get; set; }        public string Name { get; set; }        public User(string name, int age)        {            Age = age;            Name = name;        }    }

Then call:

    static void Main(string[] args)        {            var user1 = new User("zhangsan", 18);            var users = new List<User> { user1, new User("lisi", 23 ) };            var strUser1 = ObjectToJson(user1);            var setUsers = ObjectToJson(users);        }

Add a breakpoint to view json data,

Why is there a messy k _ BackingField?

2. Solution for the random k _ BackingField

I found a lot of information on the Internet and didn't figure out why this problem occurs. For more information, see. However, the solution is found, which is recorded here:

You only need to change the object class to the following format:

  [DataContract]    class User    {        [DataMember]        public int Age { get; set; }        [DataMember]        public string Name { get; set; }        public User(string name, int age)        {            Age = age;            Name = name;        }    }

Then, there will be no k _ BackingField. The call to convert Json data into objects is also simple:

static void Main(string[] args)        {            var user1 = new User("zhangsan", 18);            var users = new List<User> { user1, new User("lisi", 23 ) };            var strUser1 = ObjectToJson(user1);            var strUsers = ObjectToJson(users);            var user11 = JsonToObject<User>(strUser1);            var users1 = JsonToObject<List<User>>(strUsers);        }