C# Json 和对象的相互转换

Json 和对象的相互转换

    /// <summary>
    /// Json 和对象的相互转换  ——需引用using Newtonsoft.Json;   即：Jsonnet.net.....
    /// </summary>
    public static class JsonHelper
    {
        /// <summary>
        /// 把对象转换为JSON字符串
        /// </summary>
        /// <param name="o">对象</param>
        /// <returns>JSON字符串</returns>
        public static string ObjectToJson(this object o)
        {
            if (o == null) return null;
            return JsonConvert.SerializeObject(o);
        }

        /// <summary>
        /// 把Json文本转为实体
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="input"></param>
        /// <returns></returns>
        public static T JsonToObject<T>(this string input)
        {
            try
            {
                return JsonConvert.DeserializeObject<T>(input);
            }
            catch (Exception ex)
            {
                return default(T);
            }
        }
  
    }

使用如下所示：

  private void btnObjToJson_Click(object sender, EventArgs e)
        {
            List<Test> timePart = new List<Test>();
            timePart.Add(new Test { BeginTime = 8.10, EndTime = 8.15 });
            timePart.Add(new Test { BeginTime = 8.15, EndTime = 8.25 });
            timePart.Add(new Test { BeginTime = 8.26, EndTime = 8.55 });

            string json = JsonHelper.ObjectToJson(timePart);
            MessageBox.Show("json
==" + json);
        }

        private void btnJsonToObj_Click(object sender, EventArgs e)
        {
            List<Test> timePart = new List<Test>();
            timePart.Add(new Test { BeginTime = 8.10, EndTime = 8.15 });
            timePart.Add(new Test { BeginTime = 8.15, EndTime = 8.25 });
            timePart.Add(new Test { BeginTime = 8.26, EndTime = 8.55 });

            string json = JsonHelper.ObjectToJson(timePart);

            List<Test> list = JsonHelper.JsonToObject<List<Test>>(json);
            MessageBox.Show("list==" +list.Count);
        }