混合模式程序集是针对运行时的“v2.0.50727"版本构建的 [英] Mixed mode assembly is built against version ‘v2.0.50727′ of the runtime

问题描述

我收到以下异常:

混合模式程序集是针对运行时的v2.0.50727"版本构建的，如果没有附加配置信息，则无法在 4.0 运行时中加载.

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.

当我试图从我的 WPF 程序中导出水晶报表时...

as I was trying to export crystal report from my WPF program...

我已经在 app.config 中添加了以下内容...

I have added the following in the app.config already...

<startup useLegacyV2RuntimeActivationPolicy="true">
  <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
</startup>
<runtime>
  <NetFx40_LegacySecurityPolicy enabled="true"/>
</runtime>

有没有专家可以帮忙??????

Any experts can help????

我发现的参考:http:///www.davidmoore.info/2010/12/17/running-net-2-runtime-applications-under-the-net-4-runtime

推荐答案

尝试在配置节点下的 app.config 中使用这个确切的启动标记

Try to use this exact startup tag in your app.config under configuration node

<startup useLegacyV2RuntimeActivationPolicy="true">
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
    <requiredRuntime version="v4.0.20506" />
  </startup>

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