Convert JSON string to net object

Link for all dot net and sql server video tutorial playlists
https://www.youtube.com/user/kudvenkat/playlists?sort=dd&view=1

Link for slides, code samples and text version of the video
http://csharp-video-tutorials.blogspot.com/2015/04/convert-json-string-to-net-object.html

In this video we will discuss
1. How to convert .NET object to JSON string
2. How to convert a JSON string to .NET object

We will be using the following Employee class
public class Employee
{
public string firstName { get; set; }
public string lastName { get; set; }
public string gender { get; set; }
public int salary { get; set; }
}

Replace < with LESSTHAN symbol and > with GREATERTHAN symbol

The following example converts List<Employee> objects to a JSON string. Serialize() method of JavaScriptSerializer class converts a .NET object to a JSON string. JavaScriptSerializer class is present in System.Web.Script.Serialization namespace.

using System;
using System.Collections.Generic;
using System.Web.Script.Serialization;

namespace Demo
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Employee employee1 = new Employee
{
firstName = “Todd”,
lastName = “Grover”,
gender = “Male”,
salary = 50000
};

Employee employee2 = new Employee
{
firstName = “Sara”,
lastName = “Baker”,
gender = “Female”,
salary = 40000
};

List<Employee> listEmployee = new List<Employee>();
listEmployee.Add(employee1);
listEmployee.Add(employee2);

JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
string JSONString = javaScriptSerializer.Serialize(listEmployee);

Response.Write(JSONString);
}
}
}

Output :
[{“firstName”:”Todd”,”lastName”:”Grover”,”gender”:”Male”,”salary”:50000},{“firstName”:”Sara”,”lastName”:”Baker”,”gender”:”Female”,”salary”:40000}]

The following example converts a JSON string to List<Employee> objects. Deserialize() method of JavaScriptSerializer class converts a JSON string to List<Employee> objects.

string jsonString = “[{“firstName”:”Todd”,”lastName”:”Grover”,”gender”:”Male”,”salary”:50000},{“firstName”:”Sara”,”lastName”:”Baker”,”gender”:”Female”,”salary”:40000}]”;

JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
List<Employee> employees = (List<Employee>)javaScriptSerializer.Deserialize(jsonString, typeof(List<Employee>));

foreach(Employee employee in employees)
{
Response.Write(“First Name = ” + employee.firstName + “<br/>”);
Response.Write(“Last Name = ” + employee.lastName + “<br/>”);
Response.Write(“Gender = ” + employee.gender + “<br/>”);
Response.Write(“Salary = ” + employee.salary + “<br/><br/>”);
}

source