.net带事件的对象BinaryFormatter 序列化失败

现有一个对象（objectA）需要用BinaryFormatter序列化成二进制文件：

FileStream fileStream = new FileStream(path, FileMode.Create);

BinaryFormatter formatter = new BinaryFormatter();

formatter.Serialize(fileStream, objectA);

对象objectA的定义如下:

 [Serializable()]
    public class ObjectA
    {
        public string Name
        { set; get; }
       public event EventHandler<EventArgs> Created;

    }

注意：对象ObjectA有一个事件：Created.

如果在不能被序列化的对象（譬如WinForm里面）订阅了ObjectA的Created事件，那么在序列化时，就会出错：

对此，我并没有找到很好的解释，就连微软的官方文档里面也只字未提（还是我没有看懂）。

http://msdn.microsoft.com/zh-cn/library/system.runtime.serialization.formatters.binary.binaryformatter(v=vs.100).aspx

 给出完整代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;

namespace BinarySerializer
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
SaveFileDialog dialog = new SaveFileDialog();
if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
try
{
ObjectA objectA = new ObjectA { Name = "A" };
if (checkBox1.Checked)
objectA.Created += new EventHandler<EventArgs>(objectA_Created);//对象在被序列化时，如果对象的事件被其他对象订阅了，则会出现序列化失败错误，将这句注销就序列化成功。
string path = dialog.FileName;
FileStream fileStream = new FileStream(path, FileMode.Create);
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(fileStream, objectA);
MessageBox.Show("保存成功");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}

void objectA_Created(object sender, EventArgs e)
{
throw new NotImplementedException();
}
}

[Serializable()]
public class ObjectA
{
public string Name
{ set; get; }
public event EventHandler<EventArgs> Created;

}
}

Demo: 带事件的对象序列化失败Demo



解决方案:

在事件上加“  [field: NonSerialized]”标签，就不会再序列化事件了。

http://www.baryudin.com/blog/events-and-binaryformatter-serialization-net.html

http://stackoverflow.com/questions/2308620/why-is-binaryformatter-trying-to-serialize-an-event-on-a-serializable-class