Microsoft .NET Framework 是供建置、 部署及执行 Web 服务和应用程式的一个平台,它是一种高产能、标准架构、多语的环境, 可以将现有的软件程序资产与新一代的应用程式和服务予以整合, 同时还具备了解决部署困难和互联网上应用程式操作的敏捷性. .NET Framework 是由三个主要的部份所组成: Common Language Runtime、 统一类别程式库 (Unified Class Library) 的阶层式集合, 以及 Active Server Pages 的元件化版本 (名称为 ASP .NET).3.5版本更是添加了大量新技术,例如LINQ,ASP.net AJAX以及多种流行的互联网协议.The .NET Framework 3.5 adds new features in several major technology areas; including:
• Deep integration of Language Integrated Query (LINQ) and data awareness
• ASP.NET AJAX for quickly creating more efficient, more interactive and highly-personalized Web experiences that work across all the most popular browsers
• New web protocol support for building WCF services including AJAX, JSON, REST, POX, RSS, ATOM and several new WS-* standards
• Full tooling support for WF, WCF and WPF including the new workflow-enabled services technology
• New classes in the base class library (BCL) for the .NET Framework 3.5 address the most common customer requests.

下载:Microsoft .NET Framework 3.5 Beta 2