C# 对象持久化详解

保存和读取Json文档如下：

/// <summary>
  /// 保存成Json
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private void btnSaveJson_Click(object sender, EventArgs e)
  {
   Person p = GetPersonInfos();
   JavaScriptSerializer jserializer = new JavaScriptSerializer();
   string strJson = jserializer.Serialize(p);
   string strRegex = @"/Date((d+))/";
   MatchEvaluator evaluator = new MatchEvaluator(ConvertJsonDateToDateString);

   //对时间进行处理，需要引用System.Text.RegularExpressions;命名空间
   Regex reg = new Regex(strRegex);
   strJson = reg.Replace(strJson, evaluator);
   string filePath = "objPerson.json";
   using (FileStream fs = new FileStream(filePath, FileMode.Create))
   {
    using (StreamWriter sw = new StreamWriter(fs, Encoding.Default))
    {
     sw.Write(strJson);
    }
   }
  }
  /// <summary>
  /// 从Json中读取
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private void btnReadJson_Click(object sender, EventArgs e)
  {
   JavaScriptSerializer jserializer = new JavaScriptSerializer();
   string filePath = "objPerson.json";
   Person p;
   using (FileStream fs = new FileStream(filePath, FileMode.Open))
   {
    using (StreamReader sw = new StreamReader(fs, Encoding.Default))
    {
     string strJson = sw.ReadToEnd();
     string strRegex = @"d{4}-d{2}-d{2}sd{2}:d{2}:d{2}";
     MatchEvaluator evaluator = new MatchEvaluator(ConvertDateStringToJsonDate); //对时间进行处理
     Regex reg = new Regex(strRegex);
     strJson = reg.Replace(strJson, evaluator);
     p = jserializer.Deserialize<Person>(strJson);
    }
   }
   SetPersonInfos(p);
  }

/// <summary>
  /// 保存成二进制文件
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private void btnSaveBin_Click(object sender, EventArgs e)
  {
   Person p = GetPersonInfos();
   string filePath = "objPerson.bin";
   using (FileStream fs = new FileStream(filePath, FileMode.Create)) {
    BinaryFormatter bf = new BinaryFormatter();
    bf.Serialize(fs, p);
   }
  }
  /// <summary>
  /// 读取二进制文件
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private void btnReadBin_Click(object sender, EventArgs e)
  {
   string filePath = "objPerson.bin";
   Person p;
   using (FileStream fs = new FileStream(filePath, FileMode.Open))
   {
    BinaryFormatter bf = new BinaryFormatter();
    p= bf.Deserialize(fs) as Person;
   }
   SetPersonInfos(p);
  }