Json.NET Examples

Json.NET is a popular high-performance JSON framework for .NET.

Benefits and Features:

•     Flexible JSON serializer for converting between .NET objects and JSON
•     LINQ to JSON for manually reading and writing JSON
•     High performance, faster than .NET’s built-in JSON serializers
•     Write indented, easy to read JSON
•     Convert JSON to and from XML
•     Supports .NET 2, .NET 3.5, .NET 4, .NET 4.5, Silverlight, Windows Phone and Windows 8 Store etc.

Let’s see some of the examples. Every example is self explanatory.

I have created a “User” class for demo purpose.

public class User
{
public int Age { get; set; }
public string Name { get; set; }
public string City { get; set; }
public string Address { get; set; }
}

Converting List to JSON:

List<User> userList = new List<User>();
User user = new User();
user.Age = 20;
user.Name = "Johny";
user.City = "California";
user.Address = "Ford street, New york.";

userList.Add(user);

User user1 = new User();
user1.Age = 20;
user1.Name = "Adam";
user1.City = "Sydney";
user1.Address = "xyz street, CA.";

userList.Add(user1);

string jsonString = JsonConvert.SerializeObject(userList);
Console.WriteLine(jsonString);

/* Output

[{"Age":20,"Name":"Johny","City":"California","Address":"Ford st
reet, New york."},{"Age":20,"Name":"Adam","City":"Sydney","Address":"xyz street,
CA."}]

*/

Converting an object to JSON:

User user2 = new User();
user2.Age = 20;
user2.Name = "Sachin";
user2.City = "Mumbai";
user2.Address = "New road, Mumbai.";

string jsonString = JsonConvert.SerializeObject(user2);
Console.WriteLine(jsonString);

/* Output

Serialize Object: {"Age":20,"Name":"Sachin","City":"Mumbai","Address":"New road, M
umbai."}

*/

Converting JSON to XML:

string json = @"{
'@Id': 1,
'Email': 'sachin@google.com',
'Active': true,
'CreatedDate': '2013-11-12T00:00:00Z',
'Roles': [
'User',
'Admin'
],
'Team': {
'@Id': 2,
'Name': 'Software Developers',
'Description': 'Creators of fine software products and services.'
}
}";

XNode node = JsonConvert.DeserializeXNode(json, "Root");
Console.WriteLine(node.ToString());

/* Output

<Root Id="1">
<Email>sachin@google.com</Email>
<Active>true</Active>
<CreatedDate>2013-11-12T00:00:00Z</CreatedDate>
<Roles>User</Roles>
<Roles>Admin</Roles>
<Team Id="2">
<Name>Software Developers</Name>
<Description>Creators of fine software products and services.</Description>
</Team>
</Root>

*/

Deserialize JSON to an Object:

string jsonString = @"{'Age':20,'Name':'John','City':'Mumbai','Address':'Man road, fashion street, Mumbai 400001.'}";

User objUser = JsonConvert.DeserializeObject<User>(jsonString);
Console.WriteLine(objUser.Address);

/* Output

Man road, fashion street, Mumbai 400001.

*/

Hope this helps. Please comment below if you want any specific example of JSON.NET library.

Related articles

• Json.NET (json.codeplex.com)
• Json.NET Documentation (james.newtonking.com)