Complex Data Types And DataContractJsonSerializer:-

XmlSerializer is the serializer in .NET for many years.The Serialize and Deserialize methods of XmlSerializer are used to Serialization and Deserialization respectively.

DataContractSerializer is new in .NET 3.0.The WCF services by default uses the DataContractSerializer for Serialization.It is faster than XmlSerializer.

namespace Serialization

{

    public class Main

    {

        //convert the object to json

        public void Serialize()

        {

            //create class object

            ClassRoom objClass = new ClassRoom();

            //assign name

            objClass.Name = "MCA";

            //list of students

            List<Student> objList = new List<Student>();

            //create student object

            Student objStudent = new Student();

            //assign name

            objStudent.Name = "Sekhar";

            //assign Age

            objStudent.Age = 24;

            //student birthday

            objStudent.DOB = DateTime.Now;

            //student status

            objStudent.Status = Status.UnEmployed;

            //adding student to list

            objList.Add(objStudent);

            //assign student object

            objClass.Students = objList.ToArray();

            //json serializer

            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(ClassRoom));

            //memory stream

            MemoryStream ms = new MemoryStream();

            //write object to stream

            ser.WriteObject(ms, objClass);

            //read the json string from stream

            string json = Encoding.Default.GetString(ms.ToArray());

        }

        //convert the json to object

        public void DeSerialize()

        {

            //json string

            string Json = "{\"Name\":\"MCA\",\"Students\":[{\"Age\":24,\"DOB\":\"\\/Date(1326975142299+0530)\\/\",\"Name\":\"Sekhar\",\"Status\":2}]}";

            //json serializer

            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(ClassRoom));

            //memory stream for json string

            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(Json));

            //read object from strem

            ClassRoom objClassRoom = (ClassRoom)ser.ReadObject(ms);

        }

    }

    [DataContract]

    public class ClassRoom

    {

        //class name

        [DataMember]

        public string Name { get; set; }

        //list of students

        [DataMember]

        public Student[] Students { get; set; }

    }

    [DataContract]

    public class Student

    {

        //student name

        [DataMember]

        public string Name { get; set; }

        //student age

        [DataMember]

        public int Age { get; set; }

        //student birthday

        [DataMember]

        public DateTime DOB { get; set; }

        //student status

        [DataMember]

        public Status Status { set; get; }

    }

    //enum for student status

    public enum Status { Employed, UnEmployed, Student };

}

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