Json操作工具类【C#】

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using Newtonsoft.Json;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web.Script.Serialization;

namespace Utils
{
    /// <summary>
    /// Json操作工具类
    /// </summary>
    public static class JsonHelper
    {
        /// <summary>
        /// 将string类型的Json串转换为实体类（反序列化）
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="param"></param>
        /// <returns></returns>
        public static T JsonToT<T>(string param)
        {
            return JsonConvert.DeserializeObject<T>(param);
        }
        /// <summary>
        /// 将实体类转换为Json类型的字符串（序列化）
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="t"></param>
        /// <returns></returns>
        public static string TToJson<T>(T t)
        {
            string json = Newtonsoft.Json.JsonConvert.SerializeObject(t, Newtonsoft.Json.Formatting.Indented);
            return json;
        }
        /// <summary>
        /// Json 字符串 转换为 DataTable数据集合[{"mac":"20:f1:7c:c5:cd:80","rssi":"-86","ch":"9"},{"mac":"20:f1:7c:c5:cd:85","rssi":"-91","ch":"9"}]
        /// https://www.cnblogs.com/zhangjd/p/6007072.html
        /// </summary>
        /// <param name="json"></param>
        /// <returns></returns>
        public static DataTable JsonToDataTable(string json)
        {
            DataTable dataTable = new DataTable();  //实例化
            DataTable result;
            try
            {
                JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
                javaScriptSerializer.MaxJsonLength = Int32.MaxValue; //取得最大数值
                ArrayList arrayList = javaScriptSerializer.Deserialize<ArrayList>(json);
                if (arrayList.Count > 0)
                {
                    foreach (Dictionary<string, object> dictionary in arrayList)
                    {
                        if (dictionary.Keys.Count<string>() == 0)
                        {
                            result = dataTable;
                            return result;
                        }
                        //Columns
                        if (dataTable.Columns.Count == 0)
                        {
                            foreach (string current in dictionary.Keys)
                            {
                                dataTable.Columns.Add(current, dictionary[current].GetType());
                            }
                        }
                        //Rows
                        DataRow dataRow = dataTable.NewRow();
                        foreach (string current in dictionary.Keys)
                        {
                            dataRow[current] = dictionary[current];
                        }
                        dataTable.Rows.Add(dataRow); //循环添加行到DataTable中
                    }
                }
            }
            catch
            {
            }
            result = dataTable;
            return result;
        }
    }
}