Question

我正在使用插件架构创建应用程序。要加载外部DLL文件，我使用MEF框架。所有这些外部dll都在不同的域中运行。我想允许创建模块的人定义模块将需要执行的PermissionSets。但是，由于container.ComposeParts(this);抛出了这样的异常，我在加载这样的库时遇到了问题：

Attempt by security transparent method 'System.ComponentModel.Composition.ReflectionModel.ReflectionComposablePart.Crea
 teInstance(System.Reflection.ConstructorInfo, System.Object[])' to access 
 security critical method 
'Sth.Plugins.Dummy.DummyConfigurer..ctor()' failed.

Assembly 'System.ComponentModel.Composition, Version=4.0.0.0,
Culture=neutral, PublicKeyToken=b77a5c561934e089' 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.

目前，我正在使用此类权限：

var permissions = new PermissionSet(PermissionState.None);
permissions.AddPermission(new SecurityPermission(SecurityPermissionFlag.Execution | SecurityPermissionFlag.ControlThread));
permissions.AddPermission(new FileIOPermission(FileIOPermissionAccess.Read | FileIOPermissionAccess.PathDiscovery, _codeStorage.RuntimeFolder));

我在想，当我将DLL中加载的类标记为SecuritySafeCritical时，它会起作用，但我错了。

我怎样才能让它发挥作用？

Answer 1

由于这篇文章及其回复，我设法解决了这个错误：

the-demand-was-for-permissionset-class-system-security-permissionset-version

尝试安全透明方法异常

1 个答案: