串行化技术

串行化(serialization)是指将一个对象的当前状态转换成字节流(a stream of bytes)的过程，

而反串行化(deserialization)则指串行化过程的逆过程。
串行化也叫持久化。原因是串行化后的字节流可以保存在文件中，使其不会发生数据丢失。

而且它的读取也很容易，只要进行反串行化就可以恢复原来的数据。

在.net上有个专门的用来串行化对象的方法

下面引用MSDN下的一个串行化和反串行化的例子

using System;using System.IO;using System.Collections;using System.Runtime.Serialization.Formatters.Binary;using System.Runtime.Serialization;public class App {    [STAThread]    static void Main()     {        Serialize();        Deserialize();    }    static void Serialize()     {        // Create a hashtable of values that will eventually be serialized.        Hashtable addresses = new Hashtable();        addresses.Add("Jeff", "123 Main Street, Redmond, WA 98052");        addresses.Add("Fred", "987 Pine Road, Phila., PA 19116");        addresses.Add("Mary", "PO Box 112233, Palo Alto, CA 94301");        // To serialize the hashtable and its key/value pairs,          // you must first open a stream for writing.         // In this case, use a file stream.        FileStream fs = new FileStream("DataFile.dat", FileMode.Create);        // Construct a BinaryFormatter and use it to serialize the data to the stream.        BinaryFormatter formatter = new BinaryFormatter();        try         {            formatter.Serialize(fs, addresses);        }        catch (SerializationException e)         {            Console.WriteLine("Failed to serialize. Reason: " + e.Message);            throw;        }        finally         {            fs.Close();        }    }       static void Deserialize()     {        // Declare the hashtable reference.        Hashtable addresses  = null;        // Open the file containing the data that you want to deserialize.        FileStream fs = new FileStream("DataFile.dat", FileMode.Open);        try         {            BinaryFormatter formatter = new BinaryFormatter();            // Deserialize the hashtable from the file and             // assign the reference to the local variable.            addresses = (Hashtable) formatter.Deserialize(fs);        }        catch (SerializationException e)         {            Console.WriteLine("Failed to deserialize. Reason: " + e.Message);            throw;        }        finally         {            fs.Close();        }        // To prove that the table deserialized correctly,         // display the key/value pairs.        foreach (DictionaryEntry de in addresses)         {            Console.WriteLine("{0} lives at {1}.", de.Key, de.Value);        }    }}