C# Deserialization

In c#, Deserialization is the reverse process of serialization that means it will convert the stream of bytes into an object. The main purpose of deserialization is to read the stream of bytes from the file or database or from memory and we can convert it into an object.


As discussed in the previous serialization topic, we can serialize the objects either by using binary or XML serialization so during the deserialization process, we need to use the same serialization pattern which we used to convert the object into a stream of bytes.

C# Deserialization Example

Following is the example of deserializing the class which we serialized & stored it in a file using binary serialization in c#.


using System;

using System.IO;

using System.Runtime.Serialization.Formatters.Binary;


namespace TutlaneExamples


    class Program


        static void Main(string[] args)


            UserDetails ud = new UserDetails(1, "Suresh", "Hyderabad");

            Console.WriteLine("Before serialization the object contains: ");


            string fpath = @"D:\Test.txt";

            // Check if file exists

            if (File.Exists(fpath))




            //Opens a file and serializes the object into it in binary format.

            Stream stream = File.Open(fpath, FileMode.Create);

            BinaryFormatter bf = new BinaryFormatter();

            bf.Serialize(stream, ud);


            Console.WriteLine("\nSerialization Successful");


            //Opens file "Test.txt" and deserializes the object from it.

            stream = File.Open(fpath, FileMode.Open);

            bf = new BinaryFormatter();

            ud = (UserDetails)bf.Deserialize(stream);




            Console.WriteLine("After deserialization the object contains: ");






    public class UserDetails


        public int userId { get; set; }

        public string userName { get; set; }

        public string location { get; set; }

        public UserDetails(int id, string name, string place)


            userId = id;

            userName = name;

            location = place;


        public void GetDetails()


            Console.WriteLine("UserId: {0}", userId);

            Console.WriteLine("UserName: {0}", userName);

            Console.WriteLine("Location: {0}", location);




If you observe the above example, we are serialized the class called “UserDetails” using binary serialization and stored it in a file. After that, we used the same binary format serialization to deserialize the object.


When we execute the above example, it will serialize UserDetails class and stored in “Test.txt” file in D drive and return the result like as shown below.


C# Deserialization Example Result


This is how we can serialize and deserialize the objects in c# based on our requirements.



C# Exception  

Topics Covered