/// <summary>
/// method for serialization
/// </summary>
        public void Slz()
        {
            log4net.ILog log = log4net.LogManager.GetLogger(typeof(Serialz));
            try
            {
                IFormatter formatter = new BinaryFormatter();
                Stream     stream    = new FileStream("e:\\F1.txt", FileMode.OpenOrCreate);
                Stud       s         = new Stud(2, "abc");
                formatter.Serialize(stream, s);
                stream.Close();
                log.Info("serialization done");
            }
            catch (SerializationException se)
            {
                log.Info("Failed to serialize. Reason: " + se.Message);
            }
        }
        /// <summary>
        /// method for deserialization
        /// </summary>
        public void   Dslz()
        {
            log4net.ILog log = log4net.LogManager.GetLogger(typeof(Program));
            try
            {
                FileStream      stream    = new FileStream("e:\\F1.txt", FileMode.OpenOrCreate);
                BinaryFormatter formatter = new BinaryFormatter();

                Stud s = (Stud)formatter.Deserialize(stream);
                log.Info("value after deserialization");
                log.Info("Rollno: " + s.roll);
                log.Info("Name: " + s.name);

                stream.Close();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }