Below is how we can build a complex JSON in javascript and pass it to ASHX file. $.toJSON(jsonData) looks like as below [{"Name":"Pavan Kumar Pabothu","Age":27,"ID":3616... Raju Padhmaraju","Age":27,"ID":3... Raju Padhmaraju","Age":26,"ID":3... Below is how you can read the object in ASHX page ......