C# Serializable | C# Serialization - c# - c# tutorial - c# net

What is C# Serialization ?

  • Serialization is the process of converting an object into a stream of bytes in order to store the object or transmit it to memory, a database, or a file.
  • Its main purpose is to save the state of an object in order to be able to recreate it when needed. The reverse process is called deserialization.
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How Serialization Works:

  • The object is serialized to a stream, which carries not just the data, but information about the object's type, such as its version, culture, and assembly name.
  • From that stream, it can be stored in a database, a file, or memory.

C# Serializable Attribute:

  • To serialize the object, you need to apply SerializableAttribute attribute to the type.
  • If you don't apply SerializableAttribute attribute to the type, SerializationException exception is thrown at runtime.
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Serialization Deserialization Language

C# Serialization example:

  • Let's see the simple example of serialization in C# where we are serializing the object of Student class.
  • Here, we are going to use BinaryFormatter.Serialize(stream, reference) method to serialize the object.
using System;  
using System.IO;  
using System.Runtime.Serialization.Formatters.Binary;  
class Student  
    int rollno;  
    string name;  
    public Student(int rollno, string name)  
        this.rollno = rollno;  
        this.name = name;  
public class SerializeExample  
    public static void Main(string[] args)  
        FileStream stream = new FileStream("e:\\sss.txt", FileMode.OpenOrCreate);  
        BinaryFormatter formatter=new BinaryFormatter();  
        Student s = new Student(101, "sonoo");  
        formatter.Serialize(stream, s);  


JConsoleApplication1, Version=, Culture=neutral, PublicKeyToken=null Student rollnoname e sonoo
  • As you can see, the serialized data is stored in the file. To get the data, you need to perform deserialization.

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