Hi, I am working on screen scraping and done successfully in 3 websites, I have an issue in last website

here is my url, When I hit with my parameter, it is showing result on next page, simply posting to other page and showing the result fine on other page

Here is My Test

However, when I hit from my application, since here I don't have an option to post, it only fetch html of requested page that is obviously my above mention HTML test link, that actually have parameter in URL to get the result.

How can I handle this situtation? Please give me hint.

Thanks

here is my C# code, I am using HTMLAgality

String url;
HtmlWeb hw = new HtmlWeb();
HtmlDocument doc;
url = "http://mysampleURL";
doc = hw.Load(url);