Hi Rana Asim,
This post, and the duplicates you attempted, were caught by the spam filters because you still have not confirmed your account. As a courtesy, I have manually released this message, but you need to confirm your email to activate your account before any functionality will be enabled in the future.
Check your email for the confirmation request (check your junk folder in case it went there). If you continue to have trouble with account activation, you can talk to your Customer Advocate here => Contact the Telerik Team | Progress Telerik.
As to your technical question, I have deleted the duplicate posts and left this one for the AJAX team/community to respond to.