What are the new features of .NET2 compared to .NET1

There are several new language features in framework2. Some this are very usefull.

• Partial Class: Partial class will allow you to split a C# class into two or more source code files. This is very usefull to hiding the messy details you don't need to see.
• Generics: Generic allow you to create classes that are flexible enough to work with different class types but still supports strong type checking.
• Anonymous methods: Anonymous methods allow you to define a block of code on the fly, inside another method. You can use this technique to quickly hook up an event handler.
• Iterators: Iterators give you an easy way to create classes that support enumeration, which means you can loop through the values they contain using the C# foreach ststement.

These are the main language specific features. Let us examine other features that are new ASP.NET2.

• Master Pages: Using Master Pages, you can define a template and reuse it effortlessly. Master pages ensure that every page in the web page have the same look and feel. Also maintenance become easy using master pages.
• Data Source Controls: New datasource controls
• Personalization:
• Security and Membership
• Rich Controls
• Webparts
• Administration

What are the new features of Framework 3 comapared to earlier framework?