Working with JSON using DataContractJsonSerializer class

This class DataContractJsonSerializer is available in the assembly System.ServiceModel.Web.dll.Add a reference to this in your project.
This is the data class which we are going to serialize ie converting from object to JSON format.

public class Employee   
{       
    public string Name { get; set; }       
    public string Designation { get; set; }   
}

private void btn_Click(object sender, RoutedEventArgs e)        
{            
    Employee emp=new Employee(){ Name="Joy",Designation="Sr soft engg"};            
    DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(Employee));            
    MemoryStream stream=new MemoryStream();            
    StreamReader sr = new StreamReader(stream);            
    ser.WriteObject(stream, emp);            
    sr.BaseStream.Position = 0;            
    string s= sr.ReadToEnd();            
    MessageBox.Show(s);                    
}

Deserializing ie converting from JSON to object can be done using the method ser.ReadObject()