如何在ASP.NET Core项目中添加引用

Question

My first ASP.NET Core project.

I'm getting an error

Error CS0234 The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)

Used NuGet to add reference to Entity Framework Core. I believe that should have fixed it, but no luck.

As you can see, the lib is listed under the Dependencies node instead of the usual References node, if that matters. I've compared the csproj files and nothing stands out as obvious why one has a references node and the other doesn't.

Answer 1

In .net the Namespace for EntityFramework is System.Data.Entity, but that changed for EF Core: The right namespace is now Microsoft.EntityFrameworkCore so

using Microsoft.EntityFrameworkCore;

should fix it.