VS 2015 ASP.NET Web API (EF6) & Xamarin Enable-Migrations fails

Question

I\'m developing a project that will use ASP.NET Web API as the data service, and a Xamarin portable app as client.

I\'m trying to enable migrations in the web app, but I

Answer 1

It seems it's complaining about Using StartUp project 'MyProject.App' but you have already specified the start up project name with -StartupProjectName MyProject.App

Can you try only:

Enable-Migrations -enableautomaticmigrations -ContextTypeName MyProject.Models.ApplicationDbContext -ProjectName MyProject -StartupProjectName MyProject.App -Verbose

Make sure that in your start up project config file you have a valid connection string (unless you specify a connection string name in the DbContext constructor, your connection string should be called ApplicationDbContext, like your DbContext, if I remember correctly)

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UPDATE I underestimated the problem. It seems it might be not how you specify the start up project, but the start up project itself. I suggest looking at this answer. Pay special attention, as I was saying before, that the connection string exists in the web or app.config in the start up project and has the right name.

Answer 2

Well according to this (tested and works), the only way to enable migrations in aspnetcore+ef6 project, is to have the DbContext impl in an external full .NET class library, plus adding a dummy start up project.
Sucks but works.