One of the most widely charting API is the Google visualization API . Which enables the developers to create charts using javascript at runtime by supplying the data in a particular format. I had to use this API with ASP.Net. So the major problem in front of me was how to transfer the data in my database to the client side JavaScript. Which I could solve by using .ashx pages. I created my own class for transforming .Net DataTable to a JSON string. The final problem that I faced was that when I transferred the JSON string to the client side using Jquery AJAX method though it was parsing the JSON correctly. The Google DataTable was being formed correctly the final AnnonatedTimeline I was trying to make with that JSON data was showing errors. So to debug I created a Google DataTable manually and converted it into JSON using the method it provides. The JSON string that was given out by Google’s very own DataTable and my JSON string were exact match still, still mine was showing