using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

namespace Ant.Frame
{
    public static class Serialization
    {
        #region 对实体类进行序列化和反序列化
        /// <summary>
        /// 将对象序列化
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        private static MemoryStream Serialize(object obj)
        {
            try
            {
                BinaryFormatter formatter = new BinaryFormatter();
                MemoryStream ms = new MemoryStream();
                formatter.Serialize(ms, obj);
                return ms;
            }
            catch
            {
                return null;
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="obj"></param>
        /// <param name="stream"></param>
        /// <returns></returns>
        private static Stream Serialize(object obj, Stream stream)
        {
            try
            {
                BinaryFormatter formatter = new BinaryFormatter();
                formatter.Serialize(stream, obj);
                return stream;
            }
            catch
            {
                return null;
            }
        }
        /// <summary>
        /// 序列化
        /// </summary>
        /// <param name="stream"></param>
        /// <returns></returns>
        private static object Deserialize(Stream stream)
        {
            try
            {
                BinaryFormatter formatter = new BinaryFormatter();
                return formatter.Deserialize(stream);
            }
            catch
            {
                return null;
            }
        }

        /// <summary>
        /// 将实体或datatable转换为string
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string SerializeToString(object obj)
        {
            try
            {
                MemoryStream msObj = Serialize(obj);
                return Convert.ToBase64String(msObj.ToArray());
            }
            catch
            {
                return null;
            }
        }
        /// <summary>
        /// 将string转换为对象
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static object DeserializeFromString(string str)
        {
            try
            {
                byte[] byteArrayObj = Convert.FromBase64String(str);
                Stream myObj = new MemoryStream(byteArrayObj);
                return Deserialize(myObj);
            }
            catch
            {
                return null;
            }
        }
        #endregion
    }
}