序列化基类

using System;
using System.IO;
using System.Xml.Serialization;
using System.Xml;
using System.Collections.Generic;
using System.Text;

namespace Discuz.Common
{
 /// <summary>
 /// 序列化基类。
 /// </summary>
 public class SerializationHelper
 {
        private SerializationHelper()
  {}

        private static Dictionary<int, XmlSerializer> serializer_dict = new Dictionary<int, XmlSerializer>();

        public static XmlSerializer GetSerializer(Type t)
        {
            int type_hash = t.GetHashCode();

            if (!serializer_dict.ContainsKey(type_hash))
                serializer_dict.Add(type_hash, new XmlSerializer(t));

            return serializer_dict[type_hash];
        }

  /// <summary>
  /// 反序列化
  /// </summary>
  /// <param name="type">对象类型</param>
  /// <param name="filename">文件路径</param>
  /// <returns></returns>
  public static object Load(Type type, string filename)
  {
   FileStream fs = null;
   try
   {
    // open the stream...
    fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
    XmlSerializer serializer = new XmlSerializer(type);
    return serializer.Deserialize(fs);
               
   }
   catch(Exception ex)
   {
    throw ex;
   }
   finally
   {
    if(fs != null)
     fs.Close();
   }
  }

  /// <summary>
  /// 序列化
  /// </summary>
  /// <param name="obj">对象</param>
  /// <param name="filename">文件路径</param>
  public static bool Save(object obj, string filename)
  {
            bool success = false;

   FileStream fs = null;
   // serialize it...
   try
   {
    fs = new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.ReadWrite);
    XmlSerializer serializer = new XmlSerializer(obj.GetType());
    serializer.Serialize(fs, obj);
                success = true;
   }
   catch(Exception ex)
   {
    throw ex;
   }
   finally
   {
    if(fs != null)
     fs.Close();
   }
            return success;

  }

        /// <summary>
        /// xml序列化成字符串
        /// </summary>
        /// <param name="obj">对象</param>
        /// <returns>xml字符串</returns>
        public static string Serialize(object obj)
        {
            string returnStr = "";
            XmlSerializer serializer = GetSerializer(obj.GetType());
            MemoryStream ms = new MemoryStream();
            XmlTextWriter xtw = null;
            StreamReader sr = null;
            try
            {
                xtw = new System.Xml.XmlTextWriter(ms, Encoding.UTF8);
                xtw.Formatting = System.Xml.Formatting.Indented;
                serializer.Serialize(xtw, obj);
                ms.Seek(0, SeekOrigin.Begin);
                sr = new StreamReader(ms);
                returnStr = sr.ReadToEnd();
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (xtw != null)
                    xtw.Close();
                if (sr != null)
                    sr.Close();
                ms.Close();
            }
            return returnStr;

        }

        public static object DeSerialize(Type type, string s)
        {
            byte[] b = System.Text.Encoding.UTF8.GetBytes(s);
            try
            {
                XmlSerializer serializer = GetSerializer(type);
                return serializer.Deserialize(new MemoryStream(b));
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
 }
}

调用

 protected void Button4_Click(object sender, EventArgs e)
    {
        List<book> books = new List<book>();
        book bk = new book();
        bk.Author = "AAA";
        bk.BookName = "aaaa";
        bk.Date = "1990";
        books.Add(bk);

        bk = new book();
        bk.Author = "BBB";
        bk.BookName = "bbb";
        bk.Date = "1991";
        books.Add(bk);

        bk = new book();
        bk.Author = "ccc";
        bk.BookName = "ccc";
        bk.Date = "1992";
        books.Add(bk);

        SerializationHelper.Save(books,Server.MapPath("aa.xml"));

      
    }
    protected void Button5_Click(object sender, EventArgs e)
    {
        List<book> books = new List<book>();
        GridView1.DataSource = (List<book>)SerializationHelper.Load(books.GetType(), Server.MapPath("aa.xml"));
        GridView1.DataBind();

    }