问如何从litJson保存文件中添加数据到列表

EN

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

[System.Serializable]
public class JsonIcons {

    public string IconName;//Shows the icon Name in the list
    public int IconID;// Shows the Icon ID in the list
    public Sprite AssignIcon;

    public JsonIcons(string Name, int ID )
    {
        IconName = Name;
        IconID = ID;
    }

    public JsonIcons()
    {
    }
}

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using LitJson;
using System.IO;

//This class that does the saving
public class JsonTest : MonoBehaviour {

    public List<JsonIcons> JIcon = new List<JsonIcons>();
    public JsonData JCD;

    protected JsonIcons KZ, TestTK;

    public void Start()
    {
        TestTK = new JsonIcons("Kagami", 40);
        KZ = new JsonIcons("Magic", 0);

        JIcon.Add(TestTK); //Add things to the list to be save
        JIcon.Add(KZ);

        JCD = JsonMapper.ToJson(JIcon);
        //This is where I saved the things inside the JIcon list to a Json file
        File.WriteAllText(Application.dataPath + "/JsonSaveTest.json", JCD.ToString());
        //Debug.Log(JCD);
    }
}

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using LitJson;

public class JsonReadTest : MonoBehaviour {

    public List<JsonIcons> ReadSJ = new List<JsonIcons>();

    private string JString;
    public JsonData IconData;

    // Use this for initialization
    void Start () 
    {
        //Trying to get this file to load in the correct format inside the ReadSJ list
        JString = File.ReadAllText(Application.dataPath + "/JsonFiles/JsonSaveTest.json");
        IconData = JsonMapper.ToObject(JString);
    }
}