Implement a Custom Serializable Type - CSharp File IO

CSharp examples for File IO:Serialization

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Description

Implement a Custom Serializable Type

Demo Code


using System;/* w  ww  .  ja  va 2s .  c  o m*/
using System.IO;
using System.Text;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

    [Serializable]
    public class Employee : ISerializable
    {
        private string name;
        private int age;
        private string address;

        public Employee(string name, int age, string address)
        {
            this.name = name;
            this.age = age;
            this.address = address;
        }

        private Employee(SerializationInfo info, StreamingContext context)
        {
            name = info.GetString("Name");
            age = info.GetInt32("Age");

            try
            {
                address = info.GetString("Address");
            }
            catch (SerializationException)
            {
                address = null;
            }
        }

        public string Name
        {
            get { return name; }
            set { name = value; }
        }

        public int Age
        {
            get { return age; }
            set { age = value; }
        }
        public string Address
        {
            get
            {
                if (address == null)
                {
                    address = String.Empty;
                }
                return address;
            }

            set
            {
                address = value;
            }
        }

        public void GetObjectData(SerializationInfo inf, StreamingContext con)
        {
            inf.AddValue("Name", name);
            inf.AddValue("Age", age);

            if ((con.State & StreamingContextStates.File) == 0)
            {
                inf.AddValue("Address", address);
            }
        }

        public override string ToString()
        {
            StringBuilder str = new StringBuilder();

            str.AppendFormat("Name: {0}\r\n", Name);
            str.AppendFormat("Age: {0}\r\n", Age);
            str.AppendFormat("Address: {0}\r\n", Address);

            return str.ToString();
        }
    }

class MainClass
    {
        public static void Main(string[] args)
        {
            Employee roger = new Employee("A", 1, "B");

            Console.WriteLine(roger);

            Stream str = File.Create("my.bin");
            BinaryFormatter bf = new BinaryFormatter();
            bf.Context = new StreamingContext(StreamingContextStates.CrossAppDomain);
            bf.Serialize(str, roger);
            str.Close();

            str = File.OpenRead("my.bin");
            bf = new BinaryFormatter();
            roger = (Employee)bf.Deserialize(str);
            str.Close();
            Console.WriteLine(roger);

            str = File.Create("my.bin");
            bf = new BinaryFormatter();
            bf.Context = new StreamingContext(StreamingContextStates.File);
            bf.Serialize(str, roger);
            str.Close();

            str = File.OpenRead("my.bin");
            bf = new BinaryFormatter();
            roger = (Employee)bf.Deserialize(str);
            str.Close();
            Console.WriteLine(roger);

        }
    }

Result


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