I have been trying access Page.Request property in master pages and it didn't work at all. But after spending a few minutes at forums.asp.net I found my answer. There is a little trick involved in actually getting the request from the webform if you want to get value from a certain server control from the page. You actually have to go through the PageRequest Handler which looks something like this:

HttpApplication.PreRequestHandlerExecute

Brock Allen has got a solution with sample code to start your work with. ASP.NET Forums is a place to be. If you are working on any part of ASP.NET 2 and you are having troubles with some functions or controls then you should post the error in the forums. Remember ASP.NET team is watching the posts and they will not only answer your queries but will certainly improve the product before the final release.