ASP.NET AJAX Synchronous calls

[ng01]

In AjaxPro, if you leave out the Callback parameter, it becomes a
synchronous call. Is it possible to perform a synchronous call with
ASP.NET AJAX?

Please limit responses to the question posed...let's leave the
discussions of why not async, or what does the "A" mean for another
thread.

Thanks for any help and examples of how to do it.

 

[Cowboy \(Gregory A. Beamer\)]

Not that I know of, but you can put up a modal control, if your reason is to
stop the user from working with the page prior to the call being returned
(or hide divs?).

 

[Cowboy \(Gregory A. Beamer\)]

Just noticed the end tag to your post.

As examples, I would look at the ASP.NET examples at
http://www.asp.net/AJAX/AjaxControlToolkit/Samples/

While the ModalPopup will not solve all of your needs, it can be "reverse
engineered" to understand the mechanism. You can also look at modal
JavaScript like:
http://www.eggheadcafe.com/articles/javascript_modal_dialog.asp