ArcGIS API for Silverlight 2.0 beta发布

        rt，姗姗来迟~
        几大亮点：支持编辑功能；支持与time-enabled数据交互；必须使用silverlight 4&vs 2010&expression  blend 4进行开发；要使用完整功能必须有arcgis server 10支持；支持wkt。
       具体见http://help.arcgis.com/en/webapi/silverlight/help/?Whats_New.htm
what's new：

• Silverlight 4 is now required to develop Silverlight applications.  Silverlight 3 is no longer supported.
• Visual Studio 2010 and Expression Blend 4 are required when building Silverlight 4 applications.
• You can edit feature layers associated with an ArcGIS 10 Server feature service.
• The Map and layers support display of time enabled data.
• The enhanced geometry and route service operations are available.
• The API now supports spatial reference defined as well-known text (WKT).

Known issues:

• Both Silverlight templates may return an exception or blank page in the design view of Expression Blend 4 and Visual Studio 2010.  To resolve, add a reference to the System.Windows.Controls.Data.Input.dll (in \Microsoft SDKs\Silverlight\v4.0\Libraries\Client) and refresh the design view.