c#编译报告Warning MSB3331错误

编译c# winform程序出现MSB3331错误，解决办法：

1、在项目上点右键属性--发布；

2、选择应用程序文件，然后选中所有文件，将失效的引用从中删除（带黄色叹号前面）

参考：

I am using the VS 2008 and wanted to remove the unused references from my apps.

After going to Project<AppName> PropertiesReferences and clicking "Unused References", I chose to remove all of the recommendations.  No problem.  However, when I built the app after that, I got the compiler warning you are talking about.

It was referring to a few of the files I had removed.

I resolved this by going to "Project<AppName> PropertiesPublish" and clicking "Application Files", I checked "Show All" and deleted the files in the warning. 

I hope this helps.

https://social.msdn.microsoft.com/Forums/zh-CN/d1f9a84d-ab35-4326-a0e0-0f7a332094bf/warning-msb3331?forum=winformssetup