Nuget错误：“ EntityFramework 5.0.0”与“ Microsoft.AspNet.Identity.EntityFramework 1.0.0不兼容”

Question

I've just created a Web API application for .Net 4.5 to do some tests with Unity (IoC framework)*.

I've added Unity using Nuget:

Install-Package Unity

Then I've added Mvc5 support

Install-Package Unity.Mvc5

For the backend, I created a class project with an EF model in it, with minimal content. I registered it like this:

container.RegisterType<MyEntities>();

To do a basic process test, I added a repository and registered it like so:

container.RegisterType<IMyRepository, MyRepository>();

As far as I can tell everything is up and running, but when I execute, I get the notification that the Web API misses a reference to EF 5.

So I try add it like this:

Install-Package EntityFramework -Version 5.0.0

But then I get this error:

Unable to resolve dependencies. 'EntityFramework 5.0.0' is not compatible with 'Microsoft.AspNet.Identity.EntityFramework 1.0.0 constraint

The Microsoft.AspNet.Identity.EntityFramework reference was added during Web API project creation and it's (strangely) actually version 2.0!

I want to leave the project as is, because I think the above reference is for authentication? And I will be needing that at some point.

Any ideas on how to fix this?

• I want to test registering an EF ObjectContext as a dependency, see my previous question .

Answer 1

Asp Identity Entity Framework 2 has dependency to Entity Framework version 6.0.1 and above.

See documentation

Update your entity framework to latest version and then try your code.

Update-Package EntityFramework -version 6.1.3