当添加对MEF插件项目的引用时，为什么会出现警告图标? [英] Why do I get a warning icon when I add a reference to an MEF plugin project?

问题描述

我希望通过直接引用插件项目并实例化插件类来测试插件的核心类.创建测试Console App项目并将项目引用添加到插件项目时，在引用"列表中的引用旁边会出现一个警告图标(带有感叹号的黄色三角形).

I wish to test the core class of a plugin by directly referencing the plugin project and instantiating the plugin class. When I create a test Console App project and add a project reference to the plugin project, I get a warning icon (yellow triangle with exclamation mark) next to the reference in the References list.

当我改为添加对dll，插件的程序集构建输出的引用时，没有得到这样的警告.这个警告想告诉我什么?

When I instead add a reference to the dll, the assembly build output of the plugin, I get no such warning. What could this warning be trying to tell me?

推荐答案

如问题注释中所述，项目之间的不同.N​​ET Framework版本可能导致此问题.检查新项目的属性，以确保未使用其他默认版本.

As mentioned in the question's comments, differing .NET Framework versions between the projects can cause this. Check your new project's properties to ensure that a different default version isn't being used.

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