Take a quick look at ASP.NET 3. 5 Specific Features

Hurray,Finally I have installed VS.NET 2008 beta and started working on a ASP.NET 3.5 project,I have found some important three new features which is worth noting...

1. Integrated ASP.NET AJAX support
2. The ListView control
3. The DataPager control
   

Here on you do not need to download Microsoft's ASP.NET AJAX framework as an extension to your ASP.NET 2.0 to develop Ajax enabled web applications.ASP.NET 3.5 comes with a set of Ajax classes under System.Web.UI to build Interactive User Interfaces with Microsoft ASP.NET AJAX.

System.Web.UI

Control
MasterPage
Page
ScriptManager (NEW)
System.Web.UI
UpdatePanel (NEW)
UpdateProgress (NEW)
User control

ASP.NET 2.0 introduced a number of new data Web controls, including the GridView, DetailsView, and FormView controls. The GridView displays a list of records in a boxy, grid-like table. The DetailsView and FormView each display one record at a time, the DetailsView in a grid-like output and the FormView in a more fluid layout using templates.

The ListView control is an update to the old DataList and Repeater controls, displaying mulitple records and providing functionality like the GridView, but allowing for a more flexible layout through the use of templates.

The DataPager control operates as a sort of free-standing paging interface. In short, it renders a paging user interface - next, previous, first, last buttons, for instance - and is tied to a data Web control. The DataPager only works with those controls that implement the IPageableItemContainer interface, which (currently) includes only the ListView control.

Enjoy ASP.NET 3.5 Programming !!!!

Quick note,you can also create ASP.NET 2.0 projects using VS.NET 2008 because the CLR version is still same.