Crate Object and use JavascriptSerializer to Convert your object to Json string.
Example is as below.
Import assembly System.Web.Script.Serialization to your page.
JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
string jsonstring = jsonSerializer.Serialize(yourObject);
Example is as below.
Import assembly System.Web.Script.Serialization to your page.
JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
string jsonstring = jsonSerializer.Serialize(yourObject);