Cannot enable migrations for Entity Framework in class library

c# entity-framework ef-code-first entity-framework-5 entity-framework-migrations
Chev picture Chev · Mar 2, 2012 · Viewed 23.8k times · Source

I just got on board with EF 5 and am using their code-first migrations tool but I seem to get an error when I try to enable migrations.

I type Enable-Migrations into the package manager console and then it says

No classes deriving from DbContext found in the current project.
Edit the generated Configuration class to specify the context to enable migrations for.
Code First Migrations enabled for project MyApp.MvcUI.

It then creates a Migrations folder and a Configuration class in my MvcUI project. Thing is, my DbContext lives in a class library project called MyApp.Domain. It should be doing all that in that project and should have no problem finding my DbContext.

Answer

Chev picture Chev · Mar 2, 2012

Oh wow, nevermind. I'm dumb.

In the Nuget package manager console there is a dropdown menu at the top labeled "Default Project:". Make sure you set that to the project you want to run the command against.

Hopefully this helps someone else avoid my embarrassing mistake.

Related questions

EF 5 Migrations cannot connect to our database even though it does just fine at runtime

We have three projects. Company.Domain (class library) Company.PublicWebsite (MVC3 Web Application) Company.InternalWebsite (MVC3 Web Application) The two website projects have reference to Company.Domain. Our EF 5 DbContext lives in Company.Domain.Data.EntityFramework and it looks like …

Read More
Entity Framework (EF) Code First Cascade Delete for One-to-Zero-or-One relationship

Following the "Code First Modeling" section of the Pluralsight "Getting Started with Entity Framework 5" course by Julie Lerman, I created two POCO classes with a one-to-zero-or-one relationship: a parent (User) and an optional child (UserDetail). User and UserDetail data model …

Read More
Entity Framework 5 code-first not creating database

I'm trying to create a new database using the code first concept of Entity Framework. However when running the code the database isn't created (using the DropCreateDatabaseIfModelChanges setting), though the code is running fine. I'm seeing the following exception when …

Read More