winform程序,framework4.0 运行程序 报错
错误如下:
System.IO.FileLoadException was unhandled
Message=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.
解决 方法
在app.config的startup节点添加属性: useLegacyV2RuntimeActivationPolicy="true"
最终像这样
<?xml version="1.0"?>
<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
</startup>
</configuration>
问题解决.