XBAP：混合模式程序集无法加载.net 4.0 [英] XBAP: Mixed mode assembly unable to load in .net 4.0

问题描述

嗨！
我遵循了在.NET 4.0应用程序中加载.NET 2.0下编译的程序集的建议，即将此元素添加到应用程序配置文件中：
< ; startup useLegacyV2RuntimeActivationPolicy =" true">
    < supportedRuntime version =" v4.0" />
  < / startup>

我的问题是如何在WPF XBAP编译的.NET 4.0应用程序中进行此操作。我已经尝试使用此元素添加配置文件，但我仍然遇到此异常：

混合模式程序集是针对运行时的版本"v2.0.50727"构建的，无法在4.0运行时加载没有其他配置信息。

有任何建议吗？

Hi!

I've followed the advice on loading assemblies compiled under .NET 2.0 in a .NET 4.0 application, namely to add this element to the application configuration file:
<startup useLegacyV2RuntimeActivationPolicy="true">
    <supportedRuntime version="v4.0"/>
  </startup>

My question is how to go about this in an WPF XBAP compiled .NET 4.0 application. I've tried adding a configuration file with this element, but I still get this exception:

Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.

Any advice?

推荐答案

您使用的是哪个版本的.NET 4？ RC，Beta2，还有什么？ （如果您不确定，请发布目录名称％WinDir％\ Mesrosoft.NET \ Framework \ v4.0。*）

尝试为此创建一个小的repro。我在4.0 RC上尝试了这个，它适用于我：

Which version of .NET 4 do you use? RC, Beta2, something else? (If you are not sure, please post name of directory %WinDir%\Microsoft.NET\Framework\v4.0.*)

Try to create a small repro for that. I tried this on 4.0 RC and it works for me:

; File: Library.def
EXPORTS
    PrintHelloWorld

// Library.cpp
// Compile: cl.exe /LD /clr Library.cpp /link /def:Library.def
void ManagedFunction() {
    System::Console::WriteLine(L"{0}", System::Environment::Version);
}

#pragma managed(push, off)
extern "C" {
    void PrintHelloWorld() {
        ManagedFunction();
    }
}
#pragma managed(pop)

// HelloWorld.cpp
// Compile: cl.exe HelloWorld.cpp Library.lib
extern "C" {
    void PrintHelloWorld();
}
void main() {
    PrintHelloWorld();
}

<!-- HelloWorld.exe.config -->
<configuration>
    <startup useLegacyV2RuntimeActivationPolicy="true">
        <supportedRuntime version="v4.0" />
    </startup>
</configuration>

-Karel

-Karel

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