阴影复制，以及从任意文件夹加载混合C＃和C ++ DLL [英] Shadow Copying, and mixed C# and C++ DLLs loading from arbitrary folders
问题描述
我有一个VS 2005 C＃项目，使用一个特殊的插件文件夹来加载额外的DLL（用作资产转换过程中的节点）。
I have a VS 2005 C# project that uses a special Plugin folder to load extra DLLs (for use as nodes in an asset conversion process).
我遇到的问题是当Shadow Copying启用时，C ++ DLL拒绝使用Assembly.LoadFrom加载。我尝试创建一个自定义应用程序域，并使用Load，但这也失败。
The issue I have is that when Shadow Copying is enabled, the C++ DLLs refuse to load using Assembly.LoadFrom. I have attempted to create a custom app domain, and used Load, but this also failed.
最后，我尝试读取DLL作为byte []数据和使用Load - 再次，只有C＃DLL将以这种方式工作，并带有错误附加信息：不可验证的代码失败的策略检查（来自HRESULT：0x80131402）。
Finally, I tried reading the DLL in as byte[] data and using Load on that - again, only the C# DLLs would work this way, with an error "Additional information: Unverifiable code failed policy check. (Exception from HRESULT: 0x80131402)".
在网上的一篇文章促使我尝试使用/ clr：安全时，构建该特定的DLL，但然后它只是无法构建由于Microsoft代码中的成千上万的错误...（显然）
An article on the net prompted me to attempt to use /clr:safe when building that particular DLL, but then it simply failed to build due to thousands of errors in Microsoft code... (apparently)
禁用Shadow Copying后，LoadFrom对所有DLL都可以正常工作。该应用程序本身是一个Maya的插件，并且这用于与Maya 8.5一起工作，但在2008/2009年失败（如果启用了Shadow Copying）。
With Shadow Copying disabled, LoadFrom works fine for all DLLs. The app is itself a plugin for Maya, and this used to work with Maya 8.5 but fails with 2008 / 2009 (if Shadow Copying is enabled).
使用Shadow Copying，因为它在应用程序运行时阻止DLL文件锁定（Plugins文件夹存储在Perforce可以在应用程序运行时更新的位置）。
We really would prefer to use Shadow Copying, because it prevents DLL file locks when the app is running (the Plugins folder is stored in a location that Perforce can update while the app is running).
任何想法，如何我可以说服Shadow Copying使用自定义文件夹和混合的C＃/ C ++ DLL没有这些问题？
Any ideas as to how I can persuade Shadow Copying to work with a custom folder AND a mix of C# / C++ DLLs without these problems?
推荐答案
听起来像一个信任问题。尝试获取Fusion日志（请参阅此博文） 。您的C ++ DLL是不可验证的，因为它们不是使用 / clr：safe 编译的，因此它们只能作为完全信任加载。大概当阴影复制时，下载缓存位置没有完全信任。
Sounds like a trust issue. Try getting a Fusion log (see this blog post). Your C++ DLLs are unverifiable since they weren't compiled with /clr:safe, so they can only be loaded as full trust. Presumably when shadow copying, the download cache location doesn't have full trust.
运行 caspol -s 如果这是仅限开发的问题，您就可以开始运行。
Running caspol -s may get you up and running if this is a development-only issue.
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