How to convert JSon into DataTable

Question

Hi, 

 

I need to convert Json object into Data Table. I am reading complex Json format by hitting Webservice URL. URL is as follows for testing purpose

 

http://progressivebooks.net/httpapi/subjects.php?key=test&secret=test

 

I need to convert this Json into DataTable. Pleas help me 

 

 

Regards,

Zeeshan