QA1:
布署EF 4.1时遇到此问题：
未能加载文件或程序集“Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null”或它的某一个依赖项。拒绝访问。
1.检查一下Web.Config中是否缺少
<system.web>
<compilation debug="true" targetFramework="4.0"> <assemblies> <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> </assemblies> </compilation>2.这时问题应该解决了一半，还会报一个错“用户 'IIS APPPOOL\ASP.NET v4.0' 登录失败。 ”
在iis管理器中——》应用程序池——》ASP.NET V4.0————》高级设置——》标识——》改为localSystem或者NetworkService。
3.如果还有问题，请参照“”
QA2:
EF4.1 报错：Unable to load the specified metadata resource
是因为以下数据配置有问题
<add name="DecisionAuthContext" connectionString="metadata=res://*/DecisionAuthModel.DecisionAuth.csdl|res://*/DecisionAuthModel.DecisionAuth.ssdl|res://*/DecisionAuthModel.DecisionAuth.msl;provider=System.Data.SqlClient;provider connection string="data source=10.1.249.38;initial catalog=ProjectDecision;persist security info=True;user id=mqpan;password=123456;multipleactiveresultsets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
4.“Unable to update the EntitySet XXXXXX because it has a DefiningQuery and no element exists in the element to support the current operation.” is one of the errors you will eventually run into with the ADO.NET Entity Framework 1.0.A Probable Cause
If a table doesn’t have a primary key defined, this error will occur when you’re trying to delete an object. The generated EDMX file should also generate a warning:
Warning 6002: The table/view ‘TABLENAME’ does not have a primary key defined. The key has been inferred and the definition was created as a read-only table/view.
A solution to this problem is simply adding a primary key to the table and update your EDMX model.