C#自定义序列化ISerializable的实现方法

前端技术 2023/09/01 C#

本文实例讲述了C#自定义序列化ISerializable的实现方法。分享给大家供大家参考。具体实现方法如下:

[Serializable]
public class BaseObject
{
  [OptionalField]
  private string _str = \"I am BaseObject\";
}
[Serializable]
public class TestObject : BaseObject, ISerializable
{
  int a;
  string strName = \"\";
  Color c = Color.Red;
  DataTable _dtColors = null;
  [OptionalField]
  ArrayList list = new ArrayList();
  [OptionalField]
  List<int> list1 = new List<int>();
  [OptionalField]
  Dictionary<int, string> dic = new Dictionary<int, string>();
  //当实现ISerializable接口时,如果该构造函数不存在,则会引发一个SerializationException异常
  //该特性表示,该方法只允许序列化器调
  [SecurityPermissionAttribute(SecurityAction.Demand, SerializationFormatter = true)]
  protected TestObject(SerializationInfo info, StreamingContext context)
  {
   #region 如果基类也实现了ISerializable接口,则序列化器会自动调用基类的该构造函数,就不需要本段代码
   Type basetype = this.GetType().BaseType;
   MemberInfo[] mi = FormatterServices.GetSerializableMembers(basetype, context);
   for (int i = 0; i < mi.Length; i++)
   {
    //由于AddValue不能添加重名值,为了避免子类变量名与基类变量名相同,将基类序列化的变量名加上基类类名
    FieldInfo fi = (FieldInfo)mi[0];
    object objValue = info.GetValue(basetype.FullName + \"+\" + fi.Name, fi.FieldType);
    fi.SetValue(this, objValue);
   }
   #endregion
   a = info.GetInt32(\"a\");
   strName = info.GetString(\"strName\");
   c = (Color)info.GetValue(\"c\", typeof(Color));
   _dtColors = (DataTable)info.GetValue(\"_dtColors\", typeof(DataTable));
   list = (ArrayList)info.GetValue(\"list\", typeof(ArrayList));
   list1 = (List<int>)info.GetValue(\"list1\", typeof(List<int>));
   dic = (Dictionary<int, string>)info.GetValue(\"dic\", typeof(Dictionary<int, string>));
  }
  public TestObject()
  {
   a = 100;
   strName = \"daps\";
   InitColorTable();
   list1.Add(10);
   list1.Add(20);  
  }
  #region ISerializable 成员
  [SecurityPermissionAttribute(SecurityAction.Demand, SerializationFormatter =true)]
  void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context)
  {
   info.AddValue(\"a\", a);
   info.AddValue(\"strName\", strName);
   info.AddValue(\"c\", c);
   info.AddValue(\"_dtColors\", _dtColors);
   info.AddValue(\"list\", list);
   info.AddValue(\"list1\", list1);
   info.AddValue(\"dic\", dic);
   Type basetype = this.GetType().BaseType;
   MemberInfo[] mi = FormatterServices.GetSerializableMembers(basetype, context);
   for (int i = 0; i < mi.Length; i++)
   {
    //由于AddValue不能添加重名值,为了避免子类变量名与基类变量名相同,将基类序列化的变量名加上基类类名
    info.AddValue(basetype.FullName + \"+\" + mi[i].Name, ((FieldInfo)mi[i]).GetValue(this));
   }
  }
  #endregion
}

希望本文所述对大家的C#程序设计有所帮助。

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