问题
I have two class library project with the following setting:
- ClassLibrary1 --> Target framework-->.NET Core 2.1
- ClassLibrary2 --> Target framework-->.NET Framework 4.7.2
Now I referenced the ClassLibrary1 project in ClassLibrary2 project. It was done successfully. But on rebuilding the project I am getting an error:
Severity Code Description Project File Line Suppression State Error Project '..\ClassLibrary1\ClassLibrary1.csproj' targets 'netcoreapp2.1'. It cannot be referenced by a project that targets '.NETFramework,Version=v4.7.2'. ClassLibrary2
Can anyone help me to know the reason for this error?
回答1:
You are not able to reference:
- .NET Core libraries from .NET Framework
- .NET Framework libraries from .NET Core
If you want to share code between those two libraries you have to use .NET Standard libraries.
.NET Standard is a kind of interface, a versioned list of APIs that you can call, .NET Framework and .NET Core implements this standard
Please see for reference: .NET Standard
来源：https://stackoverflow.com/questions/53083554/project-classlibrary1-csproj-targets-netcoreapp2-1-it-cannot-be-referenced