unable to catch triggered event present in web browser control

Hello,

I am using Web Browser control in my WinForms project.

I am calling external site as Web Browser URL.

I could able to catch change in page events of site in Navigated event method of Web Browser.

But I couldn't able to catch AJAX event of page Site (where page is not getting loaded actually, i am selecting a radio button of page and particular part of page like a div is getting refreshed by getting some content from server) in any of the event methods of Web Browser control.

Could anyone help ?

Thanks...