Downloading Page source of Web pages which fire ajax request to server after first load completes

See more:

C#3.0

.NET3.5

C#

.NET

, +

I am using visual studio 2010 for creating a windows service which basically page scrap's the given url and downloads the page source. We are using HttpWebRequest and HttpWebResponse.

Using HttpWebRequest and HttpWebResponse, we are able to download the normal web pages but we have encountered some pages where the pages is downloaded first and then ajax request is fired and after ajax request is completed the pages content changes.
I want to do page scrape and download this page content.

Please can any one tell me how can I achieve this requirement.