Sheetal.Bhatt:hi,i have search on google,but i am not able to get it ,thats way i have asked this question.
Read the rest of the article. You will see that it advises you not to add your question to an existing thread, and gives reasons why it's not a good idea. Make a new post in the correct forum. That way, a lot more people will see your question, and you are more likely to get an answer. You see, this thread is resolved, and that means hardly anyone is looking at it. Also, your question is about Ajax, and this particular forum is for basic Web Forms questions, so Ajax experts definitely won't be looking here. I haven't really used Ajax, so I can't answer your question.
To start a new thread, click on http://forums.asp.net/1007.aspx and look for the button that says "Write a new post".