This provides a brief comparative chart of ASP.NET 2.0,3.0 and 3.5 features

1. New features of ASP.Net 2.0, ASP.Net 3.0 and ASP.Net 3.5- A
Comparative Chart
SN ASP.Net 2.0 ASP.Net 3.0 ASP.Net 3.5
o
1 a) Generics a) Windows a) Linq for SQL, XML,
b) Anonymous Communication Dataset, Object
methods Foundation b) Addin system
c) Partial class (WCF), formerly c) p2p base class
d) Nullable type called Indigo; a d) Active directory
e) The new API service-oriented e) ASP.NET Ajax
gives a fine messaging f) Anonymous types
grain control system which with static type
on the allows programs inference
behavior of the to interoperate g) Paging support for
runtime with locally or ADO.NET
regards to remotely similar h) ADO.NET
multithreading to web services. synchronization API
, memory b) Windows to synchronize local
allocation, Presentation caches and server
assembly Foundation side datastores.
loading and (WPF), formerly i) Asynchronous
more called Avalon; a network I/O API
f) Full 64-bit new user j) Support for HTTP
support for interface pipelining and
both the x64 subsystem and syndication feeds.
and the IA64 API based on k) New
hardware XML and vector System.CodeDom
platforms graphics, which namespace.
g) New uses 3D
personalization computer
features for graphics
ASP.NET, such hardware and
as support for Direct3D
themes, skins technologies.
and webparts. c) Windows
h) .NET Micro Workflow
Framework Foundation (WF)
allows for
building of task
automation and
integrated
transactions
using workflows.

2. d) Windows
CardSpace,
formerly called
InfoCard; a
software
component
which securely
stores a person's
digital identities
and provides a
unified interface
for choosing the
identity for a
particular
transaction, such
as logging in to a
website