无法使用dotnet CLI创建classlib（核心）

Question

I used the dotnet CLI command dotnet new classlib -o ProjectName to create a class library and added the EF Core Package using dotnet add package but when I tried to run some dotnet ef commands it threw the following error.

Error Message

Later, I realized that dotnet new classlib creates classlib (.netstandard) instead of creating classlib (core) . I would like to know is there anyway to create classlib (core) using dotnet CLI or any alternate for classlib (core) .

Answer 1

You can always use -h to check the class lib. So, when you run dotnet new classlib -h , you would find an option -f to set the framework. Basically, you can run the following if you would like to create a new .net core project:

dotnet new classlib -f netcoreapp2.2

However, since version 2.2 is just a couple of days old, you might either want to install it or use dotnet new classlib -f netcoreapp2.1 .

You can also convert your existing netstandard app to .net core by updating the .csproj file.