3月19日微软在拉斯维加斯举行每年一度的MIX大会。MIX大会是面向Web站点开发的设计者和开发者。出席者将包括程序员，战略家，信息结构师，视觉设计师，UX专家和数字市场商家。微软.NET开发者部门副总经理ScottGuthrie进行了keynote演讲。

目前Ars Technica网站已经透露出Silverlight 3 beta的一些消息，Silverlight 3 是今年会议上的重点内容。目前在微软的下载中心也已经可以进行下载：

Microsoft .NET RIA Services March '09 Preview
(4.1 MB): Microsoft .NET RIA Services simplifies the traditional n-tier application pattern by bringing together the ASP.NET and Silverlight platforms. RIA Services provides a pattern to write application logic that runs on the mid-tier and controls access to data for queries, changes and custom operations. It also provides end-to-end support for common tasks such as data validation, authentication and roles by integrating with Silverlight components on the client and ASP.NET on the mid-tier.

Microsoft Silverlight 3 SDK Beta 1
(9.6 MB): The Microsoft® Silverlight™ 3 SDK contains online documentation, online samples, libraries and tools for developing Silverlight 3 applications. Usage of the SDK is subject to the SDK License (included in the package).

Microsoft Silverlight 3 Tools Beta 1 for Visual Studio 2008 SP1
(31.3 MB): This package is an add-on for Visual Studio 2008 SP1 to provide tooling for Microsoft Silverlight 3. It can be installed on top of either Visual Studio 2008 SP1 or Visual Web Developer 2008 Express with SP1, and it provides a Silverlight project system for developing Silverlight applications using C# or Visual Basic.

 

The Microsoft Silverlight 3 beta runtime
(6.23MB) v3.0.40307.0