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Converting a C# Object into JSON string

Some people might think why I am writing so much about basics but the things but in reality  I got lot of questions through email and other communities about very basic things. So I thought instead of replying them into single thread. It is a good idea to write blog post about it and as a result I am writing this blog post.

In this post we are going to learn how we can convert a object into JSON string It is very simple. Let’s first see how we can convert C# Object into JSON string.

Converting a C# object into JSON string:

So to demo this, I have created a employee class like following.

public class Employee
    public string FirstName { get; set; }
    public string LastName { get; set; }

Now let’s create object of this class and assign some value like following.

Employee employee=new Employee
                    {FirstName = "Jalpesh",
                    LastName = "Vadgama"};

For this demo we are using console application so we have to add System.Web and System.Web.Extensions  reference to access the JavaScript Searilizer class through which we are going to convert this object into JSON string. We are going to add reference like following.


Now with JavaScript Searilizer class which belongs to System.Web.Script.Serialization namespace we can easily convert C# object into JSON string. Following is a code for that.

var javaScriptSerializer = new 
string jsonString = javaScriptSerializer.Serialize(employee);

Now when run this console application. Following is a output as expected.


Here its serialize object into JSON string. Same you can desterilize the JSON string into C# object with Deserialize function.

That’s it. It’s very easy. Hope you like it. Stay tuned for more..


  1. JavascriptSerializer is slow and has very limited features... DataContractJsonSerializer is slightly better, but nowadays, literally everyone (including Microsoft) uses JSON.NET:

    1. Thanks I agree that its bit slow. I will write a post about another way of converting C# object into JSON.

  2. Hello jalpesh i have used this json conversion in but it got output like this


    i want output what exaclty u have shown above.can u please help me.
    thank you in advance.


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