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
     
       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）。

 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
     
      (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
      
        Created;}}
      
     

 

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