Another Simple Wait Page
Sometime you need to process a lengthy job in your web form.
It is a better idea to build a wait page instead of letting
your user just stare at the screen doing nothing.
There
are a lot of solutions over Internet to accomplish this
purpose. This solution isn't new, the initial idea is from
Brian Dunnington's article
Building a Better Wait Page
in code project. Hardy on CodeProject have been using this
approach for long time in ASP.NET 1.1. Since the release of
ASP.NET 2.0, Microsoft makes a lot easier to implement
client side callback, Hardy decided to expand this solution
to include AJAX function, so that we don't need to refresh
the page from time to time.