Enterprise Library 3.1 is released
微软官方下在地址：http://msdn2.microsoft.com/en-us/library/aa480453.aspx。
也可以参考codeplex的地址：http://www.codeplex.com/entlib。
版本升级时间：
May 2007 (3.1), April 2007 (3.0), January 2006 (2.0), June 2005 (1.1)
以下是引用微软官方的话：
Enterprise Library 3.1–May 2007 contains the following general purpose application blocks:
- Caching Application Block. Developers can use this application block to incorporate a local cache in their applications.
- Cryptography Application Block. Developers can use this application block to incorporate hashing and symmetric encryption in their applications.
- Data Access Application Block. Developers can use this application block to incorporate standard database functionality in their applications.
- Exception Handling Application Block. Developers and policy makers can use this application block to create a consistent strategy for processing exceptions that occur throughout the architectural layers of enterprise applications.
- Logging Application Block. Developers can use this application block to include standard logging functionality in their applications.
- Policy Injection Application Block. Developers can use this application block to implement interception policies that can be used to streamline the implementation of common features, such as logging, caching, exception handling, and validation, across an application.
- Security Application Block. Developers can use this application block to incorporate authorization and security caching functionality in their applications.
- Validation Application Block. Developers can use this application block to create validation rules for business objects that can be used across different layers of their applications.
Enterprise Library also includes a set of core functions, including configuration, instrumentation, and object builder services. These functions are used by all other application blocks.
What's New
This release of Enterprise Library includes a new application block named the Validation Application Block, another new application block named the Policy Injection Application Block, two guidance packages, and a configuration editor that is integrated with Visual Studio. There are also additions in functionality to the Data Access Application Block and to the Logging Application Block. For information about migrating from the January 2006 release, see About the Enterprise Library 3.1 - May 2007 Release.
