What will be the new features available in ASP.Net 4.0?

Question

What will be the new features available in ASP.Net 4.0?

Answer 1

There's a couple of videos on Mircosoft Channel 9:

• ASP.NET 4.0 Roadmap by Scott Hunter
  It seems like someone has made session notes on this talk, as well.
• New Features of ASP.NET 4.0 by Steven Walther

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Quoted (partially) from those session notes on the linked blog post:

Web Forms

• Developers can manage control IDs that affect rendered client ID
• Remove ID bloat, and 'mangling'
• CSS:
• Ideally remove the need to use CSS adapters
• Defer to CSS styles and bypass existing style properties
• non-inline style attributes
• Support non-table-based HTML rendering
• URL-routing for web forms
• Friendly url handling for web forms
• configuration model for url routing
• View state
• Disable on the page, enable on specific controls - they will provide granular control of viewstate - today it is backwards
• Disable on control, enable on child controls
• GridView/ListView work better without viewstate
• ASP.NET dynamic-data

Ajax

• Continue ASP.NET Ajax innovation : RIA
• Appeal to JavaScript Developers
• Provide support for the page developer
• jQuery including Intellisense
• Templates and data binding
• Client side handling, REST or Web Services
• Covers page developer and component developer scenarios
• DOM manipulation, selectors ...
• Ajax higher-level components
• Ajax Control Toolkit is a part of the strategy - they will make the toolkit part of the overall ASP.NET package
• New controls
• Centralized script libraries and break-up for performance

ASP.NET MVC

• Appeal to those wanting separation of concerns, TDD, full control
• Ruby on Rails, Django, PHP
• Building on from ASP.NET MVC 1.0
• ASP.NET MVC (Model View Controller)
• Asynchronous controllers
• Sub-controllers & Views
• Declarative controls

ASP.NET Core

• Address customer pain points
• Improve scale and performance
• Cache extensibility and performance:
• Enable caching like Velocity

Answer 2

There are quite a few:

• static client-side ID's
• better dynamic data support
• better support for the routing feature (made popular by ASP.NET MVC) for webforms apps
• many Ajax enhancements

Read Scott Hanselman's excellent blog post (series) on .NET 4 here.

And checkout a great whitepaper on ASP.NET 4.0 here.

Marc

Answer 3

Microsoft White Paper on ASP.NET 4.0

This has a very thorough breakdown and explanation of what to look forward to.

Answer 4

There are a few ASP.NET 4.0 articles on this blog - .NET 4.0