using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Threading.Tasks;

namespace ToolsClassLibrary
{

    /// <summary>
    /// Json工具类
    /// </summary>
    public static class JsonHelper
    {
        /// <summary>   
        /// Json序列化   
        /// </summary>   
        public static string JsonSerializer<T>(T obj)
        {
            string jsonString = string.Empty;
            try
            {
                DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));

                using (MemoryStream ms = new MemoryStream())
                {
                    serializer.WriteObject(ms, obj);
                    jsonString = Encoding.UTF8.GetString(ms.ToArray());
                }
            }
            catch
            {
                jsonString = string.Empty;
            }
            return jsonString;
        }

        /// <summary>   
        /// Json反序列化  
        /// </summary>   
        public static T JsonDeserialize<T>(string jsonString)
        {
            T obj = Activator.CreateInstance<T>();
            try
            {
                using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString)))
                {
                    DataContractJsonSerializer ser = new DataContractJsonSerializer(obj.GetType());//typeof(T)  
                    T jsonObject = (T)ser.ReadObject(ms);
                    ms.Close();

                    return jsonObject;
                }
            }
            catch
            {
                return default(T);
            }
        }




        public static byte[] SerializeBinary(object request)
        {

            System.Runtime.Serialization.Formatters.Binary.BinaryFormatter serializer =

            new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();

            System.IO.MemoryStream memStream = new System.IO.MemoryStream();

            serializer.Serialize(memStream, request);

            byte[] result=memStream.GetBuffer();

            memStream.Close();
  
            return result;

        }



        public static object DeSerializeBinary(byte[] buffer)
        {
            System.IO.MemoryStream memStream = new MemoryStream(buffer);

            memStream.Position = 0;

            System.Runtime.Serialization.Formatters.Binary.BinaryFormatter deserializer =
            new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();

            object newobj = new double[2];
            try
            {
                 newobj = deserializer.Deserialize(memStream);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message.ToString());
            }

            memStream.Close();
            return newobj;
        }

    }
}