c# - MVC 2 和 .NET 4.0 的 AllowPartiallyTrustedCallersAttribute 错误

Question

Assembly 'Foo.BAL, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' is marked with the AllowPartiallyTrustedCallersAttribute, and uses the level 2 security transparency model. Level 2 transparency causes all methods in AllowPartiallyTrustedCallers assemblies to become security transparent by default, which may be the cause of this exception.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

我有一个调用我的数据访问层的标准业务层，为什么我在使用 MVC 2 和 .NET 4.0 时会收到此错误？

我之前使用的是 Enterprise Block，所以我放弃了它，现在只使用标准的 System.Data.SqlClient API 来最大限度地减少依赖性。

编辑:如果我将 BAL 和 DAL 项目上的目标框架更改为 3.5，我不会收到错误。

Answer 1

安全模型在 .NET 3.5 和 .NET 4 之间发生了相当大的变化。

http://msdn.microsoft.com/en-us/library/dd233103.aspx